English

isoeffect

From iso- + effect.

Formed from iso- + effect

Ancient Greek ἴσος ‘equal’

English iso-

Proto-Indo-European *dʰeh₁k-

…

Latin efficiō ‘accomplish’

Latin effectus ‘an effect’

Old French effect

Middle English effect

Today it means

noun A line (on a graph) representing identical effects, especially of the effects of radiation on tumors

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

Etymograph / isoeffect