IPA: /ɪˈreɪdɪˌeɪtɪv/
KK: /ɪˈreɪdɪˌeɪtɪv/
Relating to or involving the emission of radiation, especially in a way that causes something to be illuminated or heated.
The irradiative properties of the material made it useful in various scientific applications.
Irradiative → It is formed from "ir-" (meaning not) and "radiative" (from Latin "radiatus", meaning to emit rays). The word "irradiative" refers to something that does not emit rays or radiation.
Think of something that is 'not emitting rays' — 'ir-' means not, and 'radiative' relates to rays.