'blastomere' originates from New Latin formed from Greek roots, specifically 'blastos' (Greek) meaning 'bud, sprout' and 'meros' (Greek) meaning 'part'.

'blastomere' was coined in Modern/Scientific Latin in the late 19th century by combining the Greek elements 'blastos' + 'meros' (as New Latin 'blastomera'/'blastomerus') and then adopted into English as 'blastomere'.

Initially built from roots meaning 'bud' + 'part', it came to have the specialized scientific sense 'a cell resulting from cleavage of a fertilized egg' in embryology.