antiradiant
|an-ti-ra-di-ant|
/ˌæn.tiˈreɪ.di.ənt/
against emitting rays / blocks radiation
Etymology
'antiradiant' originates from Modern English, formed by combining the prefix 'anti-' (from Greek 'anti' meaning 'against') with 'radiant' (from Latin 'radians', present participle of 'radiare', meaning 'emitting rays' or 'shining').
'radiant' came into English via Old French and Middle English from Latin 'radians' (from 'radiare', to emit rays), while the prefix 'anti-' entered English from Greek via Latin and French; the compound 'antiradiant' is a Modern English formation combining these elements.
Initially the components literally conveyed 'against rays'; over time the compound has been used to mean 'opposing or preventing the emission/transmission of radiant energy' in modern technical and descriptive usage.
Meanings by Part of Speech
Noun 1
a material, device, or surface that reduces or prevents the emission or transmission of radiant energy.
They installed several antiradiants around the reactor to limit stray thermal radiation.
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Adjective 1
preventing, reducing, or opposing the emission or transmission of radiant energy (such as heat or electromagnetic radiation); not radiant.
The spacecraft was fitted with an antiradiant coating to reduce heat loss by thermal radiation.
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Last updated: 2025/09/08 14:16