sex derivative

A characteristic of male/female differences that is secondary or subsidiary to sex-irreducible, primary differences, and is for the most part under the influence of sex hormones
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

sex derivative

Sexology A characteristic of ♂/♀ differences that are 2º or subsidiary to sex-irreducible, 1º differences, and largely influenced by sex hormones
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.