Meaning of secondary sex characteristic

sec'ondary sex' characteris"tic

Pronunciation: [key]
— Med. Med.
  1. any of a number of manifestations, as development of breasts or beard, muscularity, distribution of fat tissue, and change of pitch in voice, specific to each sex and incipient at puberty but not essential to reproduction. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.