Where does “radiator” come from?

Radiator comes from Latin radiator, derived from radiatus, the past participle of radiare meaning to shine or emit rays, from radius meaning ray or spoke.

radiator (English): Anything which radiates or emits rays; A device...

Definitions

  1. Anything which radiates or emits rays; A device...

Ancestry of “radiator”, step by step

radiator traces back through 3 separate lines of ancestry.

via Latin radiāre

StepLanguageWordMeaning
1Latinradiāre
2Old Frenchroier
3Old Frenchroie
4Vulgar Latinrigasecond-person singular present active imperative...
5Gaulishricafurrow
6Proto-Celticɸrikāfurrow
7Proto-Indo-Europeanperḱ-colored; motley; to open, rip up
8Proto-Indo-Europeanper-before, in front; first; to go through
9Proto-Indo-Europeanpr̥tóspassed , crossed

via English ‐or

StepLanguageWordMeaning
1English‐orCreates an agent noun, often from a verb, indicating a person or object (often machines or parts of them) that do the verb or part of speech with which they are formed
2Middle English-our
3Old French-eorAlternative form of -or
4Latin-ator-ator, -er; second-person singular future passive...
5Latin-tor-er
6Proto-Italic-tōrForms agent nouns to verb stems
7Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
8Proto-Indo-European-tor-s

via Russian радиа́тор

StepLanguageWordMeaning
1Russianрадиа́торheatsink

Words derived from “radiator

Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European perḱ-