English

isoaddition

From iso- + addition.

Ancient Greek ἴσος ‘equal’

English iso-

Proto-Indo-European *deh₃- ‘to give’

Latin addō ‘add’

Latin additiō

Old French adition

Middle English addicioun

Today it means

noun The effect of the addition of two or more similar agents

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

Etymograph / isoaddition