List of 15-letter words containing •••••••

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There are 17 fifteen-letter words containing I, O, P, 2R, 2T and Y

BIOSTRATIGRAPHY	• biostratigraphy n. (Biology, geology) The study of the stratigraphic distribution of fossils. • BIOSTRATIGRAPHY n. the determination of age, etc., of sedimentary strata from fossils which they contain.
CRYOPRECIPITATE	• cryoprecipitate n. A frozen blood product prepared from plasma. • cryoprecipitate v. To precipitate at low temperatures. • CRYOPRECIPITATE n. a precipitate, e.g. from blood plasma, produced by freezing and thawing under controlled conditions.
CRYPTOGRAPHISTS	• cryptographists n. Plural of cryptographist. • CRYPTOGRAPHIST n. one who studies cryptographs.
DAGUERREOTYPIST	• daguerreotypist n. A person who makes daguerreotypes. • DAGUERREOTYPIST n. one who practises daguerreotyping, also DAGUERREOTYPER.
ERYTHROPOIETINS	• erythropoietins n. Plural of erythropoietin. • ERYTHROPOIETIN n. a glycoprotein hormone that stimulates the production of red blood cells by stem cells in bone marrow.
HYDROTHERAPISTS	• hydrotherapists n. Plural of hydrotherapist. • HYDROTHERAPIST n. a practitioner of hydrotherapy.
MICROPHOTOMETRY	• microphotometry n. Measurement performed with a microphotometer. • MICROPHOTOMETRY n. measurement by microphotometer, an instrument for measuring the amount of light transmitted or reflected by small areas or for measuring the relative densities of spectral lines on a photographic film or plate.
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.
POLYARTHRITIDES	• polyarthritides n. Plural of polyarthritis. • POLYARTHRITIS n. arthritis affecting several joints.
POLYARTHRITISES	• POLYARTHRITIS n. arthritis affecting several joints.
PROCRASTINATORY	• procrastinatory adj. Of or pertaining to procrastination. • PROCRASTINATORY adj. tending to procrastinate, also PROCRASTINATIVE.
PROPORTIONALITY	• proportionality n. (Uncountable) the property of being proportional. • proportionality n. (Uncountable) the principle that government action ought to be proportional to the ends achieved (e… • proportionality n. (Countable) the degree to which something is in proportion.
PROPORTIONATELY	• proportionately adv. In a proportionate manner; with due proportion; proportionally. • PROPORTIONATE adv. in proportion.
PYRETOTHERAPIES	• PYRETOTHERAPY n. medical treatment by causing fever.
PYROELECTRICITY	• pyroelectricity n. (Physics) The generation of electric charge as a result of a change in temperature. • PYROELECTRICITY n. electric charge produced in some crystals by temperature changes.
RETROSPECTIVELY	• retrospectively adv. In a retrospective manner. • RETROSPECTIVE adv. looking back.
SURREPTITIOUSLY	• surreptitiously adv. In a surreptitious manner; stealthily, furtively, secretly. • SURREPTITIOUS adv. done by stealth.

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: 107 words
Scrabble in French: 16 words
Scrabble in Spanish: 3 words
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: no word

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