'ovulation-related' is a Modern English compound formed from 'ovulation' and 'related'. 'ovulation' originates from Latin, specifically the word 'ovulatio' (from 'ovulum', a diminutive of 'ovum'), where 'ovum' meant 'egg'. 'related' originates from Latin 'relatus' (the past participle of 'referre'), where the root 'ferre' meant 'to carry' or 'to bring'.

'ovulation' entered English via New Latin/medical Latin ('ovulatio') and developed from Latin 'ovulum'/'ovum' into the modern noun 'ovulation'. 'related' comes from Latin 'relatus' through Old French/Anglo-Norman into Middle English 'relaten'/'relate', and in Modern English formed compounds such as 'ovulation-related' (initially written as 'ovulation related' and later hyphenated).

Individually, 'ovulation' originally referred to the act or process of producing/releasing an egg, and 'related' originally carried senses from 'brought back'/'told' (via 'refer'). Over time, the compound meaning settled as 'connected to the process of ovulation' in medical and general usage.