List of 12-letter words beginning with

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There are 17 twelve-letter words beginning with HELIO

HELIOCENTRIC	• heliocentric adj. (Astronomy) Having the sun at the center/centre; usually in reference to a coordinate system or orbit. • heliocentric adj. (Cosmology) Of or relating to heliocentrism. • HELIOCENTRIC adj. referred to or measured from the sun's center or appearing as if seen from it.
HELIOCHROMES	• heliochromes n. Plural of heliochrome. • HELIOCHROME n. (tradename) a photograph in natural colours.
HELIOCHROMIC	• heliochromic adj. Pertaining to, or produced by, heliochromy. • HELIOCHROMIC adj. like a heliochrome, a photograph that reproduces the natural colours of the subject.
HELIOGRAPHED	• heliographed v. Simple past tense and past participle of heliograph. • HELIOGRAPH v. to signal by heliograph.
HELIOGRAPHER	• heliographer n. One who signals by heliography. • heliographer n. (Obsolete) A photographer. • HELIOGRAPHER n. one who uses a heliograph.
HELIOGRAPHIC	• heliographic adj. Of or pertaining to heliography; transmitted by heliograph. • HELIOGRAPHIC adj. relating to heliography, also HELIOGRAPHICAL.
HELIOGRAVURE	• heliogravure n. The process of photographic engraving. • heliogravure n. An engraving of this kind. • HELIOGRAVURE n. photogravure.
HELIOLATRIES	• heliolatries n. Plural of heliolatry. • HELIOLATRY n. sun worship.
HELIOLATROUS	• heliolatrous adj. Worshipping the Sun. • HELIOLATROUS adj. relating to heliolatry.
HELIOMETRIES	• HELIOMETRY n. measurement by use of a heliometer, an instrument for measuring apparent diameter of the sun.
HELIOPHILOUS	• heliophilous adj. (Botany) That needs, or tolerates, a high level of direct sunlight. • HELIOPHILOUS adj. attracted by sunlight.
HELIOSPHERES	• heliospheres n. Plural of heliosphere. • HELIOSPHERE n. the region in space influenced by the sun or solar wind.
HELIOSPHERIC	• heliospheric adj. Of or pertaining to the heliosphere.
HELIOTHERAPY	• heliotherapy n. Any medical therapy by exposure to light. • HELIOTHERAPY n. medical treatment by exposure to the sun's rays.
HELIOTROPIES	• HELIOTROPY n. the tendency of stems and leaves to bend towards the sun.
HELIOTROPINS	• HELIOTROPIN n. a phenolic aldehyde of very pleasant odour, used as a perfume and in flavourings, etc., aka piperonal.
HELIOTROPISM	• heliotropism n. The property of some plants of turning under the influence of light; either positively (towards the… • HELIOTROPISM n. the movement of plants towards sunlight.

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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English Wiktionary: 29 words
Scrabble in French: 9 words
Scrabble in Spanish: 13 words
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: 53 words

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