List of 13-letter words containing •••••••

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There are 20 thirteen-letter words containing H, 2O, R, S, 2T and U

AFORETHOUGHTS	• AFORETHOUGHT n. a premeditation.
AUTHORISATION	• authorisation n. Alternative spelling of authorization. • AUTHORISATION n. the act of authorising, also AUTHORIZATION.
HETEROCLITOUS	• heteroclitous adj. (Obsolete) heteroclitic. • HETEROCLITOUS adj. irregularly inflected, also HETEROCLITIC.
HETEROCYSTOUS	• heterocystous adj. Having heterocysts. • HETEROCYSTOUS adj. of or like a heterocyst.
HETEROPTEROUS	• heteropterous adj. (Zoology) Belonging or relating to the Heteroptera. • HETEROPTEROUS adj. of, relating to, or belonging to the Heteroptera, a suborder of hemipterous insects, including bedbugs, water bugs, etc., also HETEROPTERAN.
HETEROSTYLOUS	• heterostylous adj. Exhibiting heterostyly. • HETEROSTYLOUS adj. having styles of different length in different flowers, also HETEROSTYLED.
HETEROTACTOUS	• HETEROTACTOUS adj. relating to heterotaxis, the anomalous arrangement of body parts.
LUTEOTROPHINS	• luteotrophins n. Plural of luteotrophin. • LUTEOTROPHIN n. another name for the hormone prolactin, also LUTEOTROPIN.
ORTHOGNATHOUS	• orthognathous adj. (Anatomy) straight-jawed. • ORTHOGNATHOUS adj. having a lower jaw that neither projects nor recedes, also ORTHOGNATHIC.
ORTHOSTICHOUS	• orthostichous adj. (Botany) Having orthostichies. • ORTHOSTICHOUS adj. arranged in vertical rows.
ORTHOTUNGSTIC	• ORTHOTUNGSTIC adj. as in orthotungstic acid.
PHOTOCURRENTS	• photocurrents n. Plural of photocurrent. • PHOTOCURRENT n. a stream of electrons produced by photoelectric or photovoltaic effects.
PHOTONEUTRONS	• photoneutrons n. Plural of photoneutron. • PHOTONEUTRON n. a neutron emitted from a nucleus as a result of photodisintegration.
PHOTOPRODUCTS	• photoproducts n. Plural of photoproduct. • PHOTOPRODUCT n. a product of a photochemical reaction.
TAUTOCHRONISM	• TAUTOCHRONISM n. the state of being a tautochrone.
TAUTOCHRONOUS	• tautochronous adj. Occupying the same time. • tautochronous adj. (Mathematics) Relating to, or having the properties of, a tautochrone. • TAUTOCHRONOUS adj. lasting the same amount of time.
THOROUGHWORTS	• thoroughworts n. Plural of thoroughwort. • THOROUGHWORT n. a wild flower with perfoliate leaves.
TOOTHBRUSHING	• toothbrushing v. Present participle of toothbrush. • toothbrushing n. An act of brushing the teeth. • TOOTHBRUSHING n. the action of using a toothbrush to clean teeth.
TRICHOPTEROUS	• trichopterous adj. (Zoology) Of, pertaining to, or characterizing the Trichoptera. • TRICHOPTEROUS adj. relating to the Trichoptera, caddis flies.
TROUBLESHOOTS	• troubleshoots v. Third-person singular simple present indicative form of troubleshoot. • TROUBLESHOOT v. to solve problems.

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: 89 words
Scrabble in French: 8 words
Scrabble in Spanish: 2 words
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: 4 words

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