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List of 13-letter words containing

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There are 19 thirteen-letter words containing E, 2O, P and 3T

ORTHOPTERISTSorthopterists n. Plural of orthopterist.
ORTHOPTERIST n. a student of insects.
OSTEOPATHISTSosteopathists n. Plural of osteopathist.
OSTEOPATHIST n. a practitioner of osteopathy, also OSTEOPATH.
PHOTODETECTORphotodetector n. Any device used to detect electromagnetic radiation.
PHOTODETECTOR n. any of various devices for detecting and measuring the intensity of radiant energy through photoelectric action.
PHOTOMETRISTSphotometrists n. Plural of photometrist.
PHOTOMETRIST n. one who practises photometry, that branch of science which treats of the measurement of the intensity of light.
PHOTOSETTINGSPHOTOSETTING n. composing (matter) by projecting film from which a printing plate is made.
PHOTOSYNTHATEphotosynthate n. (Biochemistry) Any compound that is a product of photosynthesis.
PHOTOSYNTHATE n. a product of photosynthesis.
PHOTOTYPESETSphototypesets v. Third-person singular simple present indicative form of phototypeset.
PHOTOTYPESET v. to set (type matter) by phototypesetting.
POSTDOCTORATEpostdoctorate adj. Postdoctoral.
postdoctorate n. Synonym of postdoc.
POSTDOCTORATE n. a degree after a doctorate.
POTENTIATIONSpotentiations n. Plural of potentiation.
POTENTIATION n. the act of potentiating.
POTENTIOMETERpotentiometer n. (Electronics) A user-adjustable three-terminal variable resistor that can be used as a voltage divider.
potentiometer n. (Physics) An instrument that measures a voltage by opposing it with a precise fraction of a known voltage…
POTENTIOMETER n. an instrument for measuring electromotive forces.
POTENTIOMETRYpotentiometry n. (Physics) The measurement of electrical potential (voltage) using a potentiometer.
POTENTIOMETRY n. the measurement of the potential difference of electromotive force.
PROSTATECTOMYprostatectomy n. (Surgery) The surgical removal of part or all of the prostate gland.
PROSTATECTOMY n. the surgical removal of the prostate gland.
PROTECTIONISTprotectionist adj. Of or pertaining to protectionism, or an advocate thereof.
protectionist n. Someone who believes in protecting domestic producers by impeding or limiting the importation of foreign…
PROTECTIONIST n. an advocate of government economic protection for domestic producers through restrictions on foreign competitors.
PROTECTORATESprotectorates n. Plural of protectorate.
PROTECTORATE n. an area governed by a protector.
PROTESTATIONSprotestations n. Plural of protestation.
PROTESTATION n. an avowal or solemn declaration.
STETHOSCOPISTstethoscopist n. One skilled in the use of the stethoscope.
STETHOSCOPIST n. one who uses a stethoscope.
TELEPORTATIONteleportation n. Any of many (mostly hypothetical or fictional) processes of moving matter from one spatial point to…
TELEPORTATION n. the act of moving an object or person by psychokinesis.
TOTIPOTENCIESTOTIPOTENCY n. the state of being totipotent, capable of development into a complete organ or embryo.
TROPOSCATTERSTROPOSCATTER n. the propagation of radio waves by using irregularities in the troposphere to scatter the signals beamed up by means of high-powered UHF transmitters and parabolic antennas.

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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