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There are 7 thirteen-letter words beginning with CHEM

CHEMAUTOTROPH	• CHEMAUTOTROPH n. an organism, such as a bacterium, that obtains its energy from inorganic reactions using simple compounds, such as ammonia or carbon dioxide.
CHEMISORPTION	• chemisorption n. (Chemistry) the process in which a substance is adsorbed on the surface of another by means of chemical… • CHEMISORPTION n. the act of chemisorbing.
CHEMOAUTROPHS	• CHEMOAUTROPH n. any organism, e.g. bacteria, that produces energy by the oxidation of inorganic compounds, such as iron, ammonia and hydrogen sulphide, also CHEMOAUTOTROPH.
CHEMORECEPTOR	• chemoreceptor n. A sense organ, or one of its cells (such as those for the sense of taste or smell), that can respond… • CHEMORECEPTOR n. a sense organ (as a taste bud) responding to chemical stimuli.
CHEMOSURGICAL	• chemosurgical adj. Of or pertaining to chemosurgery. • CHEMOSURGICAL adj. relating to chemosurgery.
CHEMOTAXONOMY	• chemotaxonomy n. (Biochemistry, genetics) The classification or taxonomy of organisms based on differences and similarities… • CHEMOTAXONOMY n. the classification of plants and animals based on similarities and differences in biochemical composition.
CHEMOTROPISMS	• chemotropisms n. Plural of chemotropism. • CHEMOTROPISM n. plant growth in the direction of a particular chemical.

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 1Word.ws and WikWik.org.

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English Wiktionary: 71 words
Scrabble in French: 6 words
Scrabble in Spanish: no word
Scrabble in Italian: 7 words
Scrabble in German: no word
Scrabble in Romanian: 10 words

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