English
irradiative
From irradiate + -ive.
A compound of irradiate + -ive
Latin radius ‘ray of light’
Latin radiō ‘to cause to radiate, irradiate’
Medieval Latin irradiātus
Middle English irradiate ‘illuminated, shining’
English irradiate
Today it means
adj That irradiates.
Language periods are conventional ranges, not dates for this word.
Etymograph / irradiative