coitarcheWiktionary 原文构词拆分coitus词根/词干拉丁语“sexual intercourse”+-arche后缀forms medical terms for the onset of certain changes in puberty词源说明From Latin coitus (“sexual intercourse”) + -arche.释义（英文）名词 NounThe first sexual intercourse.词族相关词（2）menarchesemenarche