age


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age

 [āj]
1. the duration, or the measure of time of the existence of a person or object.
2. to undergo change as a result of passage of time.
achievement age a measure of achievement expressed in terms of the chronologic age of a normal child showing the same degree of attainment.
chronologic age the actual measure of time elapsed since a person's birth.
developmental age
1. age estimated from the degree of anatomical development.
2. in psychology, the age of an individual determined by degree of emotional, mental, anatomical, and physiological maturation.
gestational age see gestational age.
mental age the age level of mental ability of a person as gauged by standard intelligence tests.

age

(āj),
1. The period that has elapsed since birth.
2. One of the periods into which human life is divided, distinguished by physical evolution, equilibrium, and involution; for example, the seven ages of humankind are infancy, childhood, adolescence, young adulthood, middle life, senescence, and senility.
3. To grow old; to gradually develop changes in structure that are not due to preventable disease or trauma and that are associated with decreased functional capacity and an increased probability of death.
4. To artificially induce an appearance that is characteristic of one who has lived long or of a thing that has existed for a long time.
5. In dentistry materials science, the treatment of a material to stabilize or strengthen it by causing a coherent precipitate to form. A coherent precipitate is particle formation caused by clustering of atoms of one type as part of a lattice consisting of more than one atom type.
[F. âge, L. aetas]

age

(āj)
1. the duration, or the measure of time, of the existence of a person or object.
2. the measure of an attribute relative to the chronological age of an average normal individual.

achievement age  the age of a person expressed as the chronologic age of a normal person showing the same proficiency in study.
bone age  osseous development shown radiographically, stated in terms of the chronological age at which the development is ordinarily attained.
chronological age  the measure of time elapsed since a person's birth.
fertilization age  the age of a conceptus defined by the time elapsed since fertilization.
gestational age  the age of a conceptus or pregnancy; in human clinical practice, timed from onset of the last normal menstrual period. Elsewhere the onset may be timed from estrus, coitus, artificial insemination, vaginal plug formation, fertilization, or implantation.
mental age  the age level of mental ability of a person as gauged by standard intelligence tests.

age

Etymology: L, aetus, lifetime
1 a stage of development at which the body has arrived, as measured by physical and laboratory standards, to what is normal for a male or female of the same chronological age. See also mental age.
2 to grow old.

Age

noun The time period elapsed since birth; epoch.
verb To grow old, senesce.

AGE

Abbreviation for:
acute gastroenteritis
advanced glycosylation end-product, see there
agarose gel electrophoresis
angle of greatest extension
antigen E
aqueous garlic extract

age

Medtalk noun The time period elapsed since birth. See Maternal age effect, Paternal age verbTo grow old, senesce.

age

(āj)
1. The period elapsed since birth.
2. One of the periods into which human life is divided, distinguished by physical evolution, equilibrium, and involution; e.g., the seven human ages are: infancy, childhood, adolescence, maturity, middle life, senescence, and senility.
3. To grow old; to gradually develop changes in structure that are not due to preventable disease or trauma and that are associated with decreased functional capacity and an increased probability of death.
4. To cause artificially the appearance characteristic of one who has lived long or of a thing that has existed for a long time.
5. To render the bond between a nerve agent and acetylcholinesterase refractory to disruption by an oxime antidote.
[F. âge, L. aetas]

age

(āj)
1. In dentistry materials-related science, treatment of a material to stabilize or strengthen it by forming a coherent precipitate that is particle formation caused by clustering of atoms of one type as part of a lattice consisting of more than one atom type.
2. One of the periods into which human life is divided.
[F. âge, L. aetas]

age,

n the period of time a person has existed or an object has existed.
age, biological,
n the age determined by physiology rather than chronology. Factors include changes in the physical structure of the body as well as changes in the performance of motor skills and sensory awareness.
age, chronologic,
n age determined by the passage of time since birth.
age determination,
n (by teeth), an estimate of age from the stage of tooth development and/or pattern of wear.
age distribution,
n a grouping of the persons within a population on the basis of birth date.
age factors,
n.pl variables affected by time since birth.
age hardening,
age of onset,
n the chronologic age of the patient at which the disease, affliction, or disability appeared.
age, psychological,
n a subjectively experienced age based on a person's behavior, or “how old they feel.”
age, skeletal,
n the age based on skeletal measurements relative to chronological skeletal development.

age

1. the duration, or the measure of time of the existence of an animal or object.
2. to undergo change as a result of passage of time.

age adjustment
see data adjustment.
age associated disease
diseases which occur at particular ages, either because of changes in the animal's biochemistry or immunity or because of variations in exposure of the animals because of a change in management.
age descriptor
terms other than years used to indicate the age of animals, e.g. two-tooth, first-lactation.
age determination
in the absence of explicit records about birth dates the estimation of age is a frequent task for veterinarians. The eruption, then the growth of teeth to apposition and then the wear of the teeth are the best guide to age in horses, cattle, sheep and goat, but not in the pig. In the pig and the dog some assistance can be obtained from examination of the teeth, but the general appearance of the animal and the history are the best means. See also rule of six.
age distribution
the proportion of the total population which is in each of the specified age groups.
first joining age
a critical point in the economy of a herd or flock. In seasonal animal production systems unnecessary delay may cause loss of a year's productivity for each female. Starting too early may cause losses due to difficult parturition in small dams and a poor conception rate.
age groups
cattle and sheep being grazed extensively are commonly segregated into age groups because they are dealt with as groups for purposes of mating, vaccination, prophylactic treatment and eventually culling for old age.
age-matched control
in a comparison of performance between groups it is desirable to create the groups by pairing a series of treatment animals and control animals for all significant variables, of which age would be one of the most important.
age pigment
lipofuscin.
slaughter age
the age at which the animals in a group are to be slaughtered. Varies with the meat objective, the price in the market, opportunities for replacement and the capacity to carry additional animals on the feed available.
age-specific death rate
the death rate for a specified age group as a proportion of a total number of specified animal × time period, such as cow × years.
weaning age
see weaning age.

Patient discussion about age

Q. I would like to know the best age for pregnancy? Hi I am Deontae; I got married before 1 year. I and my wife planned to have a baby after 3 years. But now she is 25. I would like to know the best age for pregnancy? Which will help us to change our plan?

A. actually there is no best age for pregnancy (as far as i know), but some studies and research had shown that after 35 years old, a pregnancy is categorized as high risk, because there are some abnormalities and labor complication that are tend to happened (statistically) along with the increase of mother's age (such as: down syndrome, genetic disorder, post-partum bleeding, miscarriage, etc.)

so if your wife is now 25, i think you guys still have another 5-10 years to "accomplish" your family plan, hehehe...
Good luck, and stay healthy always..

Q. when is the most common age to get any kind of cancer? is there is such age?

A. no, not really. but i guess the older you get the older something can pop out. the cells are dividing and multiplying all of our life, and cancer can occur because of mutation happened in the cells.

Q. Does eyesight always decrease with age? I am 45 years old and never had glasses. All my friends are starting to wear reading glasses. Should I expect this too?

A. This is what usually happens; your eyesight deteriorates as you get older. Here is a link to a few things you can do in order to protect your eyesight:
http://www.nia.nih.gov/HealthInformation/Publications/eyes.htm

More discussions about age
References in classic literature ?
When one of them is born, it is reckoned ominous, and their birth is recorded very particularly so that you may know their age by consulting the register, which, however, has not been kept above a thousand years past, or at least has been destroyed by time or public disturbances.
He said it came from a tomb, and was used by some bereaved family in that remote age when even the Pyramids of Egypt were young, Damascus a village, Abraham a prattling infant and ancient Troy not yet [dreampt] of, to receive the tears wept for some lost idol of a household.
The two young men, the student and the officer, friends from childhood, were of the same age and both handsome fellows, though not alike.
But such reaction was effective only because an age had come--the age of a negative, or agnostic philosophy--in which men's minds must needs be limited to the superficialities of things, with a kind of narrowness amounting to a positive gift.
At my age, all I ask of you is to be the companion of the closing years of my life, and to give me something of a father's interest in promoting the future welfare of your son.
But blank verse was not what the age in which Dryden lived desired, and he knew it.
For instance, I cannot doubt that all the Silurian trilobites have descended from some one crustacean, which must have lived long before the Silurian age, and which probably differed greatly from any known animal.
The country as a whole was really increasing in prosperity; Edward was fostering trade, and the towns and some of the town-merchants were becoming wealthy; but the oppressiveness of the feudal system, now becoming outgrown, was apparent, abuses in society and state and church were almost intolerable, and the spirit which was to create our modern age, beginning already in Italy to move toward the Renaissance, was felt in faint stirrings even so far to the North as England.
But at my age I can hardly get to the city, and therefore you should come oftener to the Piraeus.
Every reform was once a private opinion, and when it shall be a private opinion again it will solve the problem of the age.
CONTAINING THE MOST MEMORABLE TRANSACTIONS WHICH PASSED IN THE FAMILY OF MR ALLWORTHY, FROM THE TIME WHEN TOMMY JONES ARRIVED AT THE AGE OF FOURTEEN, TILL HE ATTAINED THE AGE OF NINETEEN.
Every age had left on them its imprint; a bit of architecture with which was bound up the remembrance of some terrible event, some bloody adventure.