List of 9-letter words containing

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There are 20 nine-letter words containing OSTR

BIOSTROME	• biostrome n. (Geology) A horizontally bedded stratum of fossilized remains of sedentary organisms. • BIOSTROME n. a rock layer consisting of a deposit of organic material such as fossils.
BOSTRYXES	• bostryxes n. Plural of bostryx. • BOSTRYX n. (Greek) a type of inflorescence, a way in which flower stems are arranged.
COLOSTRAL	• colostral adj. Relating to colostrum. • COLOSTRAL adj. relating to colostrum, also COLOSTRIC, COLOSTROUS.
COLOSTRIC	• colostric adj. Of or relating to colostrum. • COLOSTRIC adj. relating to colostrum, also COLOSTRAL, COLOSTROUS.
COLOSTRUM	• colostrum n. (Medicine) A form of milk produced by the mammary glands in late pregnancy and the few days after giving… • colostrum n. A mixture of turpentine and egg yolk, formerly used as an emulsion. • COLOSTRUM n. (Latin) milk secreted for a few days after parturition, characterised by high protein and antibody content.
EROSTRATE	• erostrate adj. Not rostrate; lacking a beak. • EROSTRATE adj. without a beak.
OSTRACEAN	• ostracean n. (Zoology) Any of a family of bivalves of which the oyster is the type. • OSTRACEAN adj. of or relating to oysters, also OSTRACEOUS. • OSTRACEAN n. a member of the oyster family formerly called Ostracea.
OSTRACISE	• ostracise v. Non-Oxford British spelling standard spelling of ostracize. • OSTRACISE v. to exclude from a group by common consent, also OSTRACIZE.
OSTRACISM	• ostracism n. (Historical) In ancient Athens (and some other cities), the temporary banishment by popular vote of… • ostracism n. (Figuratively) Banishment by some general consent. • ostracism n. Temporary exclusion from a community or society.
OSTRACIZE	• ostracize v. (Transitive, Ancient Greece, historical) To ban a person from a city for five or ten years through the… • ostracize v. (By extension) To exclude a person from a community or from society by not communicating with them or… • OSTRACIZE v. to exclude from a group by common consent, also OSTRACISE.
OSTRACODE	• ostracode n. Alternative form of ostracod. • OSTRACODE n. a minute freshwater crustacean with a bivalve carapace, also OSTRACOD.
OSTRACODS	• ostracods n. Plural of ostracod. • OSTRACOD n. a minute freshwater crustacean with a bivalve carapace, also OSTRACODE.
OSTREGERS	• ostregers n. Plural of ostreger. • OSTREGER n. a falconer who keeps a goshawk, also ASTRINGER, AUSTRINGER.
OSTRICHES	• ostriches n. Plural of ostrich. • OSTRICH n. a large, flightless bird, also ESTRICH, ESTRIDGE, OYSTRIGE.
POSTRIDER	• postrider n. One who rides over a postroad to carry the mails. • post␣rider n. Alternative form of postrider. • POSTRIDER n. one who rides over a post road to carry the mails.
PROSTRATE	• prostrate adj. Lying flat, face-down. • prostrate adj. (Figuratively) Emotionally devastated. • prostrate adj. Physically incapacitated from environmental exposure or debilitating disease.
PROVOSTRY	• provostry n. A district under a provost. • PROVOSTRY n. the office of provost, the head of certain universities and colleges.
ROSTRALLY	• rostrally adv. In a rostral direction. • rostrally adv. With regard to a rostrum (beak). • ROSTRAL adv. of or like a rostrum, a spike on prow of warship for ramming.
ROSTRATED	• rostrated adj. Rostrate. • ROSTRATED adj. beak-shaped, also ROSTRATE.
TWOSTROKE	• two-stroke adj. (Mechanical) Of or relating to a design of internal combustion engine, the working cycle of which is… • two-stroke n. A two-stroke engine. • two-stroke n. A vehicle or machine powered by a two-stroke engine.

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: 64 words
Scrabble in French: 14 words
Scrabble in Spanish: 117 words
Scrabble in Italian: 137 words
Scrabble in German: 21 words
Scrabble in Romanian: 43 words

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