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List of 10-letter words containing

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There are 19 ten-letter words containing O, 2P, R and 2T

PHOTOTROPEPHOTOTROPE n. a substance exhibiting phototropism, movement directed by light.
PHOTOTROPHphototroph n. A photoautotroph.
PHOTOTROPH n. a plant which uses light to generate energy needed to absorb nutrients.
PHOTOTROPYphototropy n. Phototropism.
PHOTOTROPY n. change of colour due to wavelength of incident light.
PINSPOTTERpinspotter n. Synonym of pinsetter (person or machine).
PINSPOTTER n. an employee on a mechanical device that spots pins in a bowling alley, also PINSETTER.
POSTPARTUMpostpartum adj. Of a mother: after giving birth (often defined as within 30 days after childbirth).
postpartum adv. After giving birth.
postpartum n. The period immediately following childbirth.
POSTSCRIPTpostscript n. (Countable) An addendum to a letter, added after the author’s signature.
postscript n. (Countable) An addition to a story, play, etc. after its completion.
postscript v. To extend (a letter or another document) with additional remarks.
PROPITIATEpropitiate v. (Transitive) To conciliate, appease, or make peace with someone, particularly a god or spirit.
propitiate v. (Transitive) To make propitious or favourable.
propitiate v. (Intransitive) To make propitiation.
PROTOPATHYPROTOPATHY n. first or direct experience.
PROTOPHYTEprotophyte n. (Biology) Any of various primitive organisms such as the slime molds.
PROTOPHYTE n. any unicellular plant, or plant forming only a plasmodium, having reproduction only by fission, gemmation, or cell division.
PROTOPLASTprotoplast adj. (Obsolete) Created first; archetypal.
protoplast n. The first-created human; Adam.
protoplast n. (Rare) A prototype or archetype; a model.
PROTOTROPHprototroph n. (Biology) Any microorganism that can synthesize its nutrients from inorganic material.
PROTOTROPH n. a bacterium feeding only on inorganic matter.
PROTOTYPALprototypal adj. Of or pertaining to a prototype.
PROTOTYPAL adj. relating to a prototype, also PROTOTYPIC, PROTOTYPICAL.
PROTOTYPEDprototyped adj. Constructed as a prototype.
PROTOTYPE v. to make a prototype.
PROTOTYPESprototypes n. Plural of prototype.
PROTOTYPE v. to make a prototype.
PROTOTYPICprototypic adj. Of or pertaining to a prototype; prototypical.
PROTOTYPIC adj. relating to a prototype, also PROTOTYPAL, PROTOTYPICAL.
PROTREPTICprotreptic adj. Serving to instruct; didactic.
protreptic n. A didactic speech, book, etc.
PROTREPTIC adj. exhorting or encouraging, also PROTREPTICAL.
STROPPIESTstroppiest adj. Superlative form of stroppy: most stroppy.
STROPPY adj. (colloquial) touchy, belligerent.
TROPOPHYTEtropophyte n. (Biology) Any plant that lives in an environment in which heavy rainfall alternates with periods of drought.
TROPOPHYTE n. a plant adapted to alterations of moisture and drought.
TRYPTOPHANtryptophan n. (Biochemistry) An essential amino acid having an indole side chain; it is present in many foods, especially…
TRYPTOPHAN n. an essential amino acid, also TRYPTOPHANE.

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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