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 There are 9 thirteen-letter words beginning with ORTHOG| ORTHOGNATHIES | • ORTHOGNATHY n. the state of having normally aligned jaws. |  | ORTHOGNATHISM | • orthognathism n. (Anatomy) The quality of being orthognathous. • ORTHOGNATHISM n. the state of having straight jaws. |  | ORTHOGNATHOUS | • orthognathous adj. (Anatomy) straight-jawed. • ORTHOGNATHOUS adj. having a lower jaw that neither projects nor recedes, also ORTHOGNATHIC. |  | ORTHOGONALISE | • orthogonalise v. Alternative form of orthogonalize. • ORTHOGONALISE v. to make orthogonal, also ORTHOGONALIZE. |  | ORTHOGONALITY | • orthogonality n. (Mathematics, statistics, software engineering) The property of being orthogonal. • ORTHOGONALITY n. the state of being orthogonal. |  | ORTHOGONALIZE | • orthogonalize v. (Transitive) To make orthogonal. • ORTHOGONALIZE v. to make orthogonal, also ORTHOGONALISE. |  | ORTHOGRAPHERS | • orthographers n. Plural of orthographer. • ORTHOGRAPHER n. a correct speller. |  | ORTHOGRAPHIES | • orthographies n. Plural of orthography. • orthographies v. Third-person singular simple present indicative form of orthography. • ORTHOGRAPHY n. the branch of knowledge concerned with the study of spelling and representing sounds of a language by letters and diacritics. |  | ORTHOGRAPHIST | • orthographist n. One who is versed in orthography. • ORTHOGRAPHIST n. an orthographer. |  
 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. 
 See this list for:- English Wiktionary: 15 words
 - Scrabble in French: 10 words
 - Scrabble in Spanish: no word
 - Scrabble in Italian: no word
 - Scrabble in German: no word
 - Scrabble in Romanian: no word
 
 
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