Etymograph

English

subradiant

From sub- + radiant.

Formed from sub- + radiant

Proto-Indo-European *upó ‘up; from below’

Proto-Italic *supo ‘under’

Latin sub ‘under, beneath, below’

English sub-

Latin radius ‘spoke of a wheel’

Latin radiō ‘to emit rays or beams’

Latin radiāns ‘shining, beaming’

Middle English radyant

English radiant

Today it means

adj Of, pertaining to, or producing subradiance

Sources

Sources: Wiktionary, “subradiant”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / subradiant

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