'anorchia' originates from Modern Latin/medical Latin, specifically the word 'anorchia', where the prefix 'an-' meant 'without' and 'orchis' meant 'testicle'.

'anorchia' was formed in medical Latin from Greek elements 'an-' + 'orchis' (Greek 'an-' meaning 'without' and 'orchis' meaning 'testicle') and was adopted into English medical vocabulary in modern usage.

Initially it literally meant 'without testicle(s)'; over time it has kept this specific medical meaning referring to the absence of one or both testes.