List of 15-letter words beginning with

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There are 9 fifteen-letter words beginning with ORT

ORTHOCHROMATISM	• orthochromatism n. Quality of being orthochromatic. • ORTHOCHROMATISM n. the state of being orthochromatic, of photographic film, sensitive to all colours except red.
ORTHODONTICALLY	• orthodontically adv. By orthodontic means. • ORTHODONTIC adv. relating to orthodontics, the rectification of crookedness in the teeth.
ORTHOGONALISING	• orthogonalising v. Present participle of orthogonalise. • ORTHOGONALISE v. to make orthogonal, also ORTHOGONALIZE.
ORTHOGONALITIES	• orthogonalities n. Plural of orthogonality. • ORTHOGONALITY n. the state of being orthogonal.
ORTHOGONALIZING	• orthogonalizing v. Present participle of orthogonalize. • ORTHOGONALIZE v. to make orthogonal, also ORTHOGONALISE.
ORTHOPAEDICALLY	• orthopaedically adv. Alternative form of orthopedically. • orthopædically adv. Obsolete typography of orthopaedically. • ORTHOPAEDIC adv. relating to orthopaedics, also ORTHOPAEDICAL, ORTHOPEDIC.
ORTHOPHOSPHATES	• orthophosphates n. Plural of orthophosphate. • ORTHOPHOSPHATE n. a salt or ester of orthophosphoric acid.
ORTHOPHOSPHORIC	• orthophosphoric adj. (Chemistry) Describing the ordinary form of phosphoric acid and its derivatives. • ORTHOPHOSPHORIC adj. phosphoric.
ORTHOPSYCHIATRY	• orthopsychiatry n. (Psychiatry) branch of psychiatry concerned with the prevention of mental illness, especially in the young. • ORTHOPSYCHIATRY n. preventive psychiatry for young people.

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: 73 words
Scrabble in French: 14 words
Scrabble in Spanish: 1 word
Scrabble in Italian: 14 words
Scrabble in German: no word
Scrabble in Romanian: 28 words

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1word.ws to play with words, anagrams, suffixes, prefixes, etc.
Ortograf.ws to look for words.

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