'mitosis-related' originates from Modern English by combining the noun 'mitosis' and the adjective 'related'. 'mitosis' itself comes from Greek, specifically the word 'mitos' where 'mitos' meant 'thread' and the suffix '-osis' indicated a process or condition; 'related' comes via Latin and Old French from 'referre/relatus' meaning 'to bring back/related'.

'mitosis' was borrowed into New Latin and scientific English in the 19th century from Greek 'mitos' ('thread') plus '-osis' (process), and 'related' comes from Latin 'referre/relatus' via Old French, eventually forming the Modern English adjective 'related'; the compound 'mitosis-related' formed in Modern English by combining these elements to describe things connected to mitosis.

Initially, 'mitosis' referred to a threadlike appearance of chromosomes; over time it came to denote the specific cellular process of division, and 'mitosis-related' now means 'connected with or caused by that process'.