early 15c., Middle French pubescence, from Medieval Latin pubescentia, noun of state from Latin pubescentem (nominative pubescens), present participle of pubescere "grow up; ripen, come to maturity; reach the age of puberty, arrive at puberty," from pubes "adult, full-grown" (see puberty).
1610s, a back-formation from pubescence, or else from French pubescent (early 16c.) or directly from Latin pubescentem (nominative pubescens), present participle of pubescere "to reach puberty" (see pubescence).
pubescence pu·bes·cence (pyōō-běs'əns)
The state of being pubescent.
The attainment or onset of puberty.
The presence of downy or fine short hair.
pubescent pu·bes·cent (pyōō-běs'ənt)
Reaching or having reached puberty.
Covered with fine short hairs.