strain

(redirected from compressive strain)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.
Related to compressive strain: Shear strain, tensile strain

strain

 [strān]
1. to overexercise.
2. excessive effort or exercise.
3. an overstretching or overexertion of some part of the musculature.
4. to filter or separate.
5. a group of organisms within a species or variety, characterized by some particular quality, as rough or smooth strains of bacteria.
caregiver role strain a nursing diagnosis accepted by the North American Nursing Diagnosis Association, defined as difficulty performing the caregiver role.
risk for caregiver role strain a nursing diagnosis accepted by the North American Nursing Diagnosis Association, defined as vulnerability of a caregiver for felt difficulty performing the caregiver role.

strain

(strān),
1. A population of homogeneous organisms possessing a set of defined characteristics; in bacteriology, the set of descendants that retains the characteristics of the ancestor; members of a strain that subsequently differ from the original isolate are regarded as belonging either to a substrain of the original strain, or to a new strain
2. Specific host cell(s) designed or selected to optimize production of recombinant products.
3. To make an effort to the limit of one's strength.
4. To injure by overuse or improper use (usually refers to a muscle tear).
5. An act of straining.
6. Injury resulting from strain or overuse.
7. The change in shape that a body undergoes when acted on by an external force.
8. To filter; to percolate.

strain

(strān)
1. to overexercise.
2. excessive effort or exercise.
3. an overstretching or overexertion of some part of the musculature.
4. to filter.
5. change in the size or shape of a body as the result of an externally applied force.
6. a group of organisms within a species or variety, characterized by some particular quality.

wild-type strain  that used as a standard for a given species or variety of organism, usually assumed to be the one found in nature.

strain 1

(strān)
v.
1. To pull, draw, or stretch tight.
2. To stretch or exert one's muscles or nerves to the utmost.
3. To injure or impair by overuse or overexertion; wrench.
4. To pass a liquid through a filtering agent.
5. To draw off or remove by filtration.
n.
1. The act of straining.
2. The state of being strained.
3. Extreme or laborious effort, exertion, or work.
4. A great or excessive pressure, demand, or stress on one's body, mind, or resources.
5. A wrench, twist, or other physical injury resulting from excessive tension, effort, or use.

strain 2

(strān)
n.
1. Biology
a. A group of bacteria or viruses that are genetically distinct from other groups of the same species.
b. A group of cultivated plants or domestic animals of the same species that have distinctive characteristics but are not considered a separate breed or variety.
2.
a. The collective descendants of a common ancestor; a race, stock, line, or breed.
b. Any of the various lines of ancestry united in an individual or a family; ancestry or lineage.

strain

Etymology: ME, streinen
1 v, to exert physical force in a manner that may result in injury, usually muscular.
2 v, to separate solids or particles from a liquid with a filter or sieve.
3 n, damage, usually muscular, that results from excessive physical effort.
4 n, a taxon that is a subgroup of a species.
5 n, an emotional state reflecting mental pressure or fatigue.

strain

noun AIDS An HIV isolate from a person or group of persons given its own unique identifier, or strain name–eg, MN, LAI Orthopedics An overuse injury verb To injure by overuse; to wear out or stress beyond normal limits; straining may be associated with tissue microtearing Ophthalmology Overuse of eyes, resulting in transient discomfort Vox populi verb To filter; remove particles from a fluid

strain

(strān)
1. A population of homogeneous organisms possessing a set of defined characters. bacteriology The set of descendants that retains the characteristics of the ancestor; members of a strain that subsequently differ from the original isolate are regarded as belonging either to a substrain of the original strain, or to a new strain.
2. Specific host cell(s) designed or selected to optimize production of recombinant products.
3. To make an effort to the limit of one's strength.
4. To injure by overuse or improper use.
5. An act of straining.
6. Injury resulting from tensile force to muscle or tendon, especially skeletal muscles.
7. The change in shape that a body undergoes when acted on by an external stress.
8. To filter; to percolate.
[A.S. strēon, progeny]

strain

Stretching or tearing of muscle fibres, usually in the course of athletic overactivity. There is swelling, pain, bruising and a tendency to muscle spasm. Treatment is by rest, STRAPPING and painkilling drugs.

strain

a group of organisms within a species or variety, distinguished by one or more minor characteristics.

strain

the extent to which a body or object is deformed when an external force is applied to it. Often measured as a percentage change in the object's dimensions (e.g. length) or in its position (e.g. angle moved).

strain

prolonged tension that may exceed elastic recoil of the material

strain

soft-tissue overuse injury

strain

deformation of an object in response to an applied load; the original size and shape of the object are restored when strain ceases (see stress); defined in terms of imposed load, e.g. compression causes compression strain, tension causes tension strain, shear causes shear strain

strain,

n 1., an injury to muscle tissue resulting from overstretching.
2., deformation and distortion of tissues.
3., mental distress.
strain, ligamentous,
n asymmetric position and/or motion correlated with elastic deformation of ligaments, fascia, and other connective tissues.
strain, ligamentous articular (li·g·menˑ·chs är·tikˑ·yu·ler stranˑ),
n any condition that results in excessive or otherwise abnormal tension or strain on the ligaments.
strain, membranous articular,
n any cranial condition that results in excessive or abnormal tension in the membranes of the dura mater.
strain, muscle,
n.pl mild, moderate, or severe tearing of the muscle tissue in response to overstretching or trauma.
strain, muscular,
n mild, moderate, or severe tearing of muscle fibers in response to overstretching.
strain, role,
n stressful life event that occurs as a result of the struggle between the different demands of life. Throughout the lifetime, a person may simultaneously adopt several functions, including that of a parent, caretaker, or employee, and the competing demands of these roles may produce stress in affecting a person's health.
strain, SBS lateral,
n rotation of the occipital and sphenoid bones in the same direction about parallel vertical axes. May either be left or right lateral strain, depending on the basisphenoid's position. Also called
sphenobasilar synchondrosis (symphysis) lateral strain.
strain, SBS vertical,
n rotation of the occipital and sphenoid bones in the same direction about parallel transverse axes. May be either superior or inferior, depending on the position of the basisphenoid. Also called
sphenobasilar synchondrosis (symphysis) vertical strain.

strain 

1. Internal tension in a lens due to poor annealing, or to glass of a non-uniform coefficient of expansion, or from external pressure on the edge of a glass spectacle lens. It results in birefringence, which is observed with a polariscope.
2. To overwork a faculty (e.g. eyestrain caused by sustained vision of near point objects); or a part of the body (e.g. muscles); or a system (e.g. the effect on corneal metabolism of a closed eye wearing a PMMA lens. This is often referred to as

strain

(strān)
1. Population of homogeneous organisms possessing a set of defined characteristics.
2. Specific host cell(s) designed or selected to optimize production of recombinant products.
3. To make an effort to the limit of one's strength.
4. To injure by overuse or improper use (usually refers to a muscle tear).
5. An act of straining.
6. Injury resulting from strain or overuse.
7. Change in shape that a body undergoes when acted on by an external force.
8. To filter; to percolate.
[A.S. strēon, progeny]

strain,

n 1. a deformation induced by an external force.
2. deformation expressed as a pure number or ratio resulting from the application of a load.
3. a traumatic stretching or compression of such tissues as the ligaments, capsule, or musculature associated with a joint. See also sprain.
strain hardening,

strain

1. to overexercise.
2. to filter.
3. an overstretching or overexertion of some part of the musculature.
4. excessive effort.
5. one or more organisms within a species or variety, characterized by some particular quality, as rough or smooth strains of bacteria.

strain 2 Brucella suis
used in a vaccine in China against brucellosis in all target species.
strain 19 Brucella abortus
see strain 19.
strain 45/20 Brucella abortus
the strain of reduced virulence used as a living vaccine for adult cattle against bovine brucellosis.
strain 51 Salmonella dublin
a rough strain with reduced virulence used in Europe to immunize young calves.
strain RB51 Brucella abortus
a live rough mutant that will immunize cattle but does not induce a reaction to standard serological tests for brucellosis.
strain Rev I Brucella melitensis
live attenuated strain used for vaccination in small ruminants.
strain SC54 Salmonella cholerasuis
an avirulent organism used live in a vaccine against salmonellosis in swine.
strain 9R Salmonella gallinarium
a rough strain used as a live vaccine against S. gallinarium and S. enteriditis in poultry.
cell strain
compressive strain
physical stress which tends to structural compaction.
tensile strain
physical strain which tends toward structural elongation.

Patient discussion about strain

Q. My doctor advised me not to strain much. My doctor advised me not to strain much. What if I am physically unable to exercise due to a medical condition?

A. Your doctor is more concerned about your health. So accept his advice and improve in your health. There is virtually no medical condition that will keep you from doing any type of exercise. Even people with heart failure -- who were long told not to exercise at all -- can benefit from moderate amounts of activity. And people with limited mobility can often do water exercises, or do yoga or other exercises while seated in a chair (some "chair exercise" videos are now on the market). Of course, if you have any medical condition, check with your doctor before starting any exercise program.

Q. shoulder and neck strain and pain I have a terrible shoulder and neck pain and i keep cracking my neck muscles to release pressure. I get temporary relief with tylenol but after few hrs the pain and strain starts again.Any ideas?

A. A mellow exercise and streching on a regular basis is the best way to release a sore back and muscles in general, including your neck. You should try that plus applying local warm temperature (for example a warm pillow)around your neck. If that doesn't work then other anti-inflammatory drugs that you either apply as a cream or take as a pill can help you.

Q. any tips for low back strain? I'm an athlete, been having maaaajor lower back pain lately, during sports mainly but also when I just get out of bed in the morning. I was never like this- I'm really into sports and never felt so old in my life!!! Dont think the doctors really know their way with me, was hoping for some tips from your side. thanx

A. Take Ibuprofen. I take 600mg and helps a lot. Also stretch like crazy -- three times a day if you can. Stretch you hamstring totally. You need to be very limber all the time. You should also lay off on exercising for a bit. Wait for the irritations to go down. Do tons of back and stomach exercises -- only after the irritation goes down. First thing in the morning is get out of bed, turn toward your bed,lift your leg on the bed and stretch you legs. Lots of things to do. Don't wait too long to see a doctor - it doesn't help not seeing a doc. The best a doc can do is give you an MRI. Xrays are ok but an MRI tells the story. I know, I had two back operations and have a bad back for 30 years (I am 49). Had my operations 7 months ago and now I lift almost every day (I don't lift as much -- just a lot of reps). Good luck.

More discussions about strain
References in periodicals archive ?
Results showed that change in resistivity at compressive failure for the smart cement was over 1,000 times more than compressive strain, and the addition of 1 percent NCC further enhanced the compressive strength by about 3 percent after one day, and 28 percent after 28 days of curing under water.
Compression parallel-to-grain experiments demonstrated that 100[degrees]C to 105[degrees]C and 120[degrees]C to 125[degrees]C resulted in the largest ultimate mean compressive strain.
04 Table 3: Data Used for Ultimate Compressive Strain Equation Compressive Diameter to Confinement Specimen Strain from Tie-Spacing Coefficient Compressive Designation Fardis and Ratio (2E [f.
The resulting compressive strain of the swollen rubber was measured using a linear transducer The network chain density of the rubber was calculated using equation 1 (ref.
The reduced compressive strength of various samples at 10% compressive strain is listed in Table 1.
High SF and associated high compressive stiffness of the nozzle limit vertical compressive strain in the nozzle.
the compressive strength passed through the maximum at 5 days, and the compressive strain showed the exact reverse result.
When the unrestrained shrinkage strain of the concrete is known--the Eqs (3) and (4) and the scheme in Fig 5 could be used to determine the mean compressive strain in the reinforcement:
Figure 11b shows the stress field at the site of implantation for the 3D-plotted scaffolds (65 and 85% porosity) surrounded by the cartilaginous tissue, under 9% compressive strain.
At the end of unloading in Step 4, all three samples have sustained a slight compressive strain relative to the value they were deformed to during Step 2.
The critical compressive strain values of selected polymeric and carbon fibers have been measured using direct compression of single fibers.
Along the principal compressive strain axis (defined in [ILLUSTRATION FOR FIGURE 1 OMITTED]), profuse local kinkings of edge-on lamellae are visible [ILLUSTRATION FOR FIGURE 9 OMITTED].