en·do·thrix I. \ˈendəˌthriks\ Etymology: New Latin, from end- + -thrix synonym of trichophyton II. noun (pluralendothrixes \-sə̇s\ ; orendothri·ces \ˌ ̷ ̷ ̷ ̷ˈthrīˌsēz\) Etymology: New Latin Endothrix : trichophyton 2 III. adjective Etymology: New Latin, from end- + Greek thrix hair — more at trichina : occurring within a hair — compare ectothrix