suppression


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suppression

 [sŭ-presh´un]
the act of holding back or checking.
1. the stopping or inhibition of something, such as a secretion, excretion, normal discharge, or other function.
2. in psychiatry, conscious inhibition of an unacceptable impulse or idea as contrasted with repression, which is unconscious.
3. in genetics, a second mutation occurring at a site different from the first mutation site and able to mask or suppress the phenotypic expression of the first mutation; the organism appears to be reverted but is in fact doubly mutant.
4. inhibition of the erythrocytic stage of Plasmodium to prevent clinical attacks of malaria; used for prophylaxis.
5. cortical inhibition of perception of objects in all or part of the visual field of one eye during binocular vision.
bone marrow suppression reduction of the cell-forming functions of bone marrow, such as by a drug or because of replacement of the marrow by a disease process. Called also myelophthisis and myelosuppression.
labor suppression in the nursing interventions classification, a nursing intervention defined as controlling uterine contractions prior to 37 weeks of gestation to prevent preterm birth. See also labor.
lactation suppression in the nursing interventions classification, a nursing intervention defined as facilitating the cessation of lactation and minimizing breast engorgement after childbirth.
overdrive suppression the suppression of intrinsic cellular automaticity by a rapid outside stimulus. In cardiology this refers to the inhibitory effect of a faster pacemaker on a slower pacemaker. The faster rate causes an accumulation of intracellular sodium, stimulating the sodium-potassium pump, which hyperpolarizes the cell so that it takes longer to reach threshold potential. This phenomenon is present in healthy His-Purkinje cells but decreases with a decrease in membrane potential and loss of fast sodium channels.

sup·pres·sion

(sŭ-presh'ŭn),
1. Deliberately excluding from conscious thought.
See also: epistasis. Compare: repression.
2. Arrest of the secretion of a fluid, such as urine or bile.
See also: epistasis. Compare: retention (2).
3. Checking of an abnormal flow or discharge, as in suppression of a hemorrhage.
See also: epistasis.
4. The effect of a second mutation that overwrites a phenotypic change caused by a previous mutation at a different point on the chromosome.
See also: epistasis.
5. Inhibition of vision in one eye when dissimilar images fall on corresponding retinal points.
6. The attenuation or arrest of an immune response.
[L. subprimo (subp-), pp. -pressus, to press down]

suppression

/sup·pres·sion/ (sŭ-presh´un)
1. the act of holding back or checking.
2. sudden stoppage of a secretion, excretion, or normal discharge.
3. in psychiatry, conscious inhibition of an unacceptable impulse or idea as contrasted with repression, which is unconscious.
4. in genetics, masking of the phenotypic expression of a mutation by the occurrence of a second (suppressor) mutation at a different site from the first; the organism appears to be reverted but is in fact doubly mutated.
5. inhibition of the erythrocytic stage of plasmodium as prophylaxis for clinical attacks of malaria.
6. cortical inhibition of perception of objects in all or part of the visual field of one eye during binocular vision.

bone marrow suppression  suppression of bone marrow activity, resulting in reduction in the number of platelets, red cells, and white cells.
overdrive suppression  transient suppression of automaticity in a cardiac pacemaker following a period of stimulation by a more rapidly discharging pacemaker.

suppression

(sə-prĕsh′ən)
n.
1. The act of suppressing.
2. The state of being suppressed.
3. Psychiatry Conscious exclusion of unacceptable desires, thoughts, or memories from the mind.
4. Genetics The inhibition of gene expression.

suppression

[səpresh′ən]
Etymology: L, supprimere
(in psychoanalysis) the conscious inhibition of or effort to conceal unacceptable or painful thoughts, desires, impulses, feelings, or acts. Compare repression.

suppression

Slowing down, restraint, inhibition Psychiatry The conscious effort to control and conceal unacceptable impulses, thoughts, feelings, acts

sup·pres·sion

(sŭ-presh'ŭn)
1. Deliberate exclusion from conscious thought.
Compare: repression
2. Arrest of the secretion of a fluid, such as urine or bile.
Compare: retention (2)
3. Checking of an abnormal flow or discharge, as in suppression of a hemorrhage.
See also: epistasis
4. The effect of a second mutation, which overwrites a phenotypic change caused by a previous mutation at a different point on the chromosome.
5. Inhibition of vision in one eye when dissimilar images fall on corresponding retinal points.
[L. subprimo, pp. -pressus, to press down]

suppression

  1. failure to develop any organ or structure.
  2. (genetics) the mechanism whereby the effects of a primary MUTATION are suppressed or negated by a second mutation, the SUPPRESSOR MUTATION, that occurs at a different site from that of the primary mutation. Thus a function lost by a primary mutation can be totally or partially restored by a suppressor mutation. Suppression may be intergenic, where the suppressor mutation occurs in a different GENE from that of the primary mutation, or intragenic, where the suppressor mutation occurs at a different site in the same gene.

suppression,

n 1., in naturopathic medicine, the successful relief of symptoms without curing the underlying illness or disease.
2., in homeopathy, the elimination of symptoms, often with topicals, without curing deeper aspects of the disease. Thought to result in more serious inner disease later.

suppression 

The process by which the brain inhibits the retinal image (or part of it) of one eye, when both eyes are simultaneously stimulated. This occurs to avoid diplopia as in strabismus, in uncorrected anisometropia, in retinal rivalry, etc. Syn. suspenopsia (this term actually refers to voluntary suppression as occurs, for example, when using a monocular microscope with one eye); suspension (most often used when referring to partial suppression). See cheiroscope; physiological diplopia; Javal's grid; Mallett fixation disparity unit; Remy separator; retinal rivalry; Bagolini lens test; four prism dioptre base out test; FRIEND test; Turville infinity balance test; Worth's four dot test; vectogram.

sup·pres·sion

(sŭ-presh'ŭn)
1. Deliberately excluding from conscious thought.
2. Arrest of the secretion of a fluid, such as urine or bile.
Compare: retention (3)
[L. subprimo (subp-), pp. -pressus, to press down]

suppression

1. sudden stoppage of a secretion, excretion or normal discharge.
2. in genetics, restoration of a lost function by a second mutation either in a gene other than that involved in the primary mutation, or within the same gene.
References in periodicals archive ?
The fire suppression system did not detect the fire, and fusible links were found encrusted with solidified grease, as shown in Figure 2.
The median filtering over channels may lose time/frequency characteristics of the original EEG, but burst suppression patterns generally have synchrony over channels.
Although anecdotal evidence suggests treatments can enhance suppression effectiveness and firefighter safety, knowledge gaps and data limitations have precluded direct quantification of the influence of past fuel treatment investments on wildfire suppression expenditures.
The authors report the use of regression analysis of data for 419 fires (with an average size of 925 ha), to relate suppression costs to 24 independent variables, including landscape characteristics such as slope and aspect, in six regions of the western USA.
6% in those assigned to tamoxifen combined with ovarian function suppression.
Table 1 shows the sprinkler characteristics of the fixed fire suppression system in Mount Baker Ridge Tunnel.
Race/ethnicity, age, and disease stage at diagnosis were statistically significant indicators of viral suppression [less than or equal to] 15 months after diagnosis: black persons (PR = 0.
2001), the number of food- or animal-related thoughts expressed during the Suppression and Control conditions was registered by asking participants to press a clicking device with their dominant hand each time they had a target thought (food or animal, depending on the condition; see "Procedure"), while simultaneously reporting the thought out loud.
Conversely, in some situations, there may be a challenge by an interested person, including media, to a decision to grant suppression or withhold names from the public arena.
Among the Canadian studies, the odds ratio for the effect of acid suppression on CDI was just 1.
Tokyo, March 15 (BNA) - High levels of radiation have been detected near suppression chambers of two of the reactors at the Fukushima Daiichi nuclear plant.