chronologic age

chronologic age,

the age of an individual expressed as time that has elapsed since birth. The age of an infant is expressed in hours, days, or months. The age of children and adults is expressed in years.

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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.

developmental age.

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.

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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,

n See hardening, age.

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.