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List of 15-letter words containing

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There are 20 fifteen-letter words containing O, 2P, 3S and T

BISPHOSPHONATESbisphosphonates n. Plural of bisphosphonate.
BISPHOSPHONATE n. any of a family of drugs primarily used to prevent and treat osteoporosis.
OPPORTUNENESSESOPPORTUNENESS n. OPPORTUNE, happening at the right time.
PETROPHYSICISTSpetrophysicists n. Plural of petrophysicist.
PETROPHYSICIST n. a student of petrophysics.
PHILOSOPHASTERSphilosophasters n. Plural of philosophaster.
PHILOSOPHASTER n. an amateur or superficial philosopher.
POSTAPOCALYPSESpostapocalypses n. Plural of postapocalypse.
post-apocalypses n. Plural of post-apocalypse.
POSTMASTERSHIPSpostmasterships n. Plural of postmastership.
POSTMASTERSHIP n. the office of postmaster.
PRECIPITOUSNESSprecipitousness n. The state or quality of being precipitous.
PRECIPITOUSNESS n. the state of being precipitous.
PREDISPOSITIONSpredispositions n. Plural of predisposition.
PREDISPOSITION n. an inclination.
PRESUPPOSITIONSpresuppositions n. Plural of presupposition.
PRESUPPOSITION n. a preliminary supposition.
PROSPECTIVENESSprospectiveness n. The quality of being prospective.
PROSPECTIVENESS n. the state of being prospective.
PSILANTHROPISMSPSILANTHROPISM n. the denial of Christ's divinity.
PSILANTHROPISTSpsilanthropists n. Plural of psilanthropist.
PSILANTHROPIST n. one who denies Christ's divinity.
PSYCHOPHYSICISTpsychophysicist n. One who studies psychophysics.
PSYCHOPHYSICIST n. a student of psychophysics.
SPECTROSCOPISTSspectroscopists n. Plural of spectroscopist.
SPECTROSCOPIST n. one who uses a spectroscope.
SPINTHARISCOPESspinthariscopes n. Plural of spinthariscope.
SPINTHARISCOPE n. an instrument for visually detecting alpha particles.
STREPTOCARPUSESstreptocarpuses n. Plural of streptocarpus.
STREPTOCARPUS n. any flowering plant of the Cape primrose genus Streptocarpus, with foxglove-like flowers.
SUPERPHOSPHATESsuperphosphates n. Plural of superphosphate.
SUPERPHOSPHATE n. acid phosphate.
SUPERSCRIPTIONSsuperscriptions n. Plural of superscription.
SUPERSCRIPTION n. something written above.
SUPPORTABLENESSsupportableness n. The state of being supportable.
SUPPORTABLENESS n. the state of being supportable.
SUPPOSITIONLESSSUPPOSITIONLESS adj. without supposition.

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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