English
florigen
From flori- + -gen.
A compound of flori- + -gen
Proto-Indo-European *bʰleh₃- ‘to bloom’
Proto-Indo-European *bʰléh₃s
Proto-Italic *flōs ‘flower, blossom’
Latin flōs ‘flower’
English flori-
Today it means
noun a supposed hormone that causes flowering in plants
Language periods are conventional ranges, not dates for this word.
Etymograph / florigen