Normal variation in the length of the follicular phase of the menstrual cycle: effect of chronological age.
His chronological age does not correspond to his developmental age in these areas.
chronological age in Medicine
chronological age chron·o·log·i·cal age (krŏn'ə-lŏj'ĭ-kəl) n. Abbr. CA, C.A. The number of years a person has lived, used especially in psychometrics as a standard against which certain variables, such as behavior and intelligence, are measured.