List of 13-letter words beginning with

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There are 20 thirteen-letter words beginning with PYR

PYRAMIDICALLY	• pyramidically adv. In the form of a pyramid. • PYRAMIDICAL adv. of or like a pyramid, also PYRAMIDIC.
PYRETOTHERAPY	• pyretotherapy n. (Obsolete, medicine) pyrotherapy. • PYRETOTHERAPY n. medical treatment by causing fever.
PYRHELIOMETER	• pyrheliometer n. A device that measures the intensity of solar radiation received on the surface of the earth. • PYRHELIOMETER n. an instrument for measuring the heating effect of the sun.
PYRIDOXAMINES	• pyridoxamines n. Plural of pyridoxamine. • PYRIDOXAMINE n. a crystalline amine of the vitamin B6 group.
PYRIMETHAMINE	• pyrimethamine n. (Pharmacology) A synthetic compound derived from pyrimidine, acting as a folic acid antagonist and used… • PYRIMETHAMINE n. a drug used in the treatment of malaria and toxoplasmosis.
PYRITHIAMINES	• PYRITHIAMINE n. an antivitamin causing thiamine (vitamin B1) deficiency.
PYRITOHEDRONS	• pyritohedrons n. Plural of pyritohedron. • PYRITOHEDRON n. a pentagonal dodecahedron.
PYROBALLOGIES	• PYROBALLOGY n. the study of artillery.
PYROCATECHINS	• pyrocatechins n. Plural of pyrocatechin. • PYROCATECHIN n. another name for catechol, also PYROCATECHOL.
PYROCATECHOLS	• pyrocatechols n. Plural of pyrocatechol. • PYROCATECHOL n. another name for catechol, also PYROCATECHIN.
PYROELECTRICS	• pyroelectrics n. Plural of pyroelectric. • PYROELECTRIC n. a pyroelectric substance.
PYROLYTICALLY	• pyrolytically adv. By means of pyrolysis. • PYROLYTIC adv. relating to pyrolysis, decomposition due to heat.
PYROMORPHITES	• pyromorphites n. Plural of pyromorphite. • PYROMORPHITE n. a green, brown, or yellow lead ore.
PYROPHOSPHATE	• pyrophosphate n. (Inorganic chemistry) Any salt or ester of pyrophosphoric acid. • PYROPHOSPHATE n. a salt or ester of pyrophosphoric acid.
PYROPHYLLITES	• pyrophyllites n. Plural of pyrophyllite. • PYROPHYLLITE n. a silvery-white to pale-green aluminum silicate.
PYROSULPHATES	• pyrosulphates n. Plural of pyrosulphate. • PYROSULPHATE n. a salt of sulphur.
PYROSULPHURIC	• pyrosulphuric adj. (Britain) Alternative spelling of pyrosulfuric. • PYROSULPHURIC adj. as in pyrosulphuric acid, a type of acid.
PYROTARTRATES	• pyrotartrates n. Plural of pyrotartrate. • PYROTARTRATE n. a salt of tartaric acid.
PYROTECHNICAL	• pyrotechnical adj. Of or pertaining to pyrotechnics. • pyrotechnical adj. Resembling fireworks. • PYROTECHNICAL adj. relating to pyrotechnics, the art of making fireworks, also PYROTECHNIC.
PYROTECHNISTS	• pyrotechnists n. Plural of pyrotechnist. • PYROTECHNIST n. a firework maker.

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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English Wiktionary: 96 words
Scrabble in French: 27 words
Scrabble in Spanish: no word
Scrabble in Italian: no word
Scrabble in German: no word
Scrabble in Romanian: no word

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