'gametic' originates from New Latin, specifically the word 'gameticus', where the element 'gamet-' ultimately comes from Ancient Greek 'gamos' meaning 'marriage' or 'union'.

'gametic' changed from the Neo-Latin/Modern Latin word 'gameticus' (built from the combining form 'gamet-' derived from Greek and the adjectival suffix '-icus') and eventually became the modern English word 'gametic' by adopting the suffix '-ic' to form an adjective from 'gamete'.

Initially, the Greek root referred to 'marriage' or 'union', but over time the term evolved into its current biological sense of 'relating to gametes (sex cells)'.