English

GloFish

From glow + fish

A compound of glow + fish

Proto-Indo-European *ǵʰleh₁- ‘to shine, glow’

Middle English glouen

English glow

Proto-Indo-European *piskós

Proto-Germanic *fiskaz

Proto-West Germanic *fisk

Old English fisċ

Middle English fisch ‘an animal that inhabits the water or the meat…’

English fish

Today it means

name A trademarked and patented brand of fluorescently colored genetically modified aquarium fish.

Language periods are conventional ranges, not dates for this word.