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There are 7 ten-letter words beginning with IRRA

IRRADIANCEirradiance n. The act of irradiating; emission of rays of light.
irradiance n. That which irradiates or is irradiated; lustre; splendour; brilliancy.
irradiance n. (Physics) The radiant power received by unit area of surface.
IRRADIANCYirradiancy n. Synonym of irradiance.
IRRADIANCY n. the act of irradiating, also IRRADIANCE.
IRRADIATEDirradiated v. Simple past tense and past participle of irradiate.
irradiated adj. Emitted outwards from a centre like rays.
irradiated adj. (Heraldry) Having rays.
IRRADIATESirradiates v. Third-person singular simple present indicative form of irradiate.
IRRADIATE v. to shed light or other rays upon or into.
IRRADIATORirradiator n. A device used to irradiate.
IRRADIATOR n. something or someone that irradiates.
IRRADICATEirradicate v. To root deeply.
IRRADICATE v. to fix firmly.
IRRATIONALirrational adj. Not rational; unfounded or nonsensical.
irrational adj. (Mathematics, arithmetic, number theory, not comparable) Of a real number, that cannot be written as…
irrational n. A real number that can not be expressed as the quotient of two integers, an irrational number.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 7 words
  • Scrabble in French: 10 words
  • Scrabble in Spanish: 18 words
  • Scrabble in Italian: 24 words
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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