'organogenesis' originates from Modern scientific English/New Latin, specifically combining the word 'organ' (from Latin 'organum', ultimately from Greek 'organon') and the Greek word 'genesis', where 'genesis' meant 'origin, birth'.

'organ' changed from Greek 'organon' to Latin 'organum' and then into English as 'organ'; 'genesis' was borrowed from Greek into New Latin and used to form scientific compounds, producing the compound 'organogenesis' in modern scientific usage.

Initially it meant 'the origin or birth/formation of organs', and over time this core meaning has largely remained the same in modern biological usage.