List of 12-letter words containing •••••

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There are 18 twelve-letter words containing N, 2O, 2P and Y

CYCLOPROPANE	• cyclopropane n. (Organic chemistry, pharmacology) The simplest alicyclic hydrocarbon, C₃H₆, an inflammable gas, sometimes… • CYCLOPROPANE n. a flammable gaseous saturated cyclic hydrocarbon sometimes used as a general anesthetic.
HYPNOPHOBIAS	• HYPNOPHOBIA n. an irrational fear of sleep.
HYPOPLASTRON	• hypoplastron n. The third lateral plate in the plastron of turtles. • HYPOPLASTRON n. the plate behind the hyoplastron in a turtle's plastron.
PHONOTYPICAL	• phonotypical adj. Alternative form of phonotypic. • PHONOTYPICAL adj. of or like a phonotype, a printing type of phonetic alphabet, also PHONOTYPIC.
PHONOTYPISTS	• phonotypists n. Plural of phonotypist. • PHONOTYPIST n. one who practises phonotypy.
PHOTOCOPYING	• photocopying v. Present participle of photocopy. • photocopying n. The process by which photocopies are made. • PHOTOCOPYING n. the act of making a photocopy.
PODOPHYLLINS	• podophyllins n. Plural of podophyllin. • PODOPHYLLIN n. a cathartic resin obtained from the rhizomes of the Podophyllum genus, also PODOPHYLIN.
POLYISOPRENE	• polyisoprene n. (Chemistry) Any polymer whose constituent monomer is isoprene; especially natural, and some synthetic, rubbers. • POLYISOPRENE n. a rubberlike polymer of isoprene.
POLYPHENOLIC	• polyphenolic adj. Of, or relating to the polyphenols. • polyphenolic n. A polyphenol, or derivative. • POLYPHENOLIC adj. of or like polyphenol.
POLYPHONISTS	• polyphonists n. Plural of polyphonist. • POLYPHONIST n. a contrapuntist, one who writes counterpoint.
POLYPHYODONT	• polyphyodont n. Any animal whose teeth are continuously replaced. • POLYPHYODONT adj. having more than two successive dentitions.
POLYPROPENES	• polypropenes n. Plural of polypropene. • POLYPROPENE n. any of various thermoplastic plastics or fibers that are polymers of propylene, also POLYPROPYLENE.
PORPHYROPSIN	• porphyropsin n. Any of a group of purple carotenoid pigments, similar to rhodopsin, in the retinas of some fish. • PORPHYROPSIN n. a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin.
POSTHYPNOTIC	• posthypnotic adj. After being hypnotized. • POSTHYPNOTIC adj. taking place after hypnosis.
PROPOXYPHENE	• propoxyphene n. Dextropropoxyphene. • PROPOXYPHENE n. a narcotic analgesic structurally related to methadone but less addicting.
PYTHONOMORPH	• pythonomorph n. Any large extinct reptile of the taxon Pythonomorpha. • pythonomorph n. Any member of the taxon Pythonomorpha. • PYTHONOMORPH n. a large marine reptile of the Cretaceous period, with long, scaly body and paddle-shaped limbs.
SPHYGMOPHONE	• sphygmophone n. (Physiology) An electrical instrument for determining by ear the rhythm of the pulse of a person at a distance. • SPHYGMOPHONE n. an instrument for hearing the pulse.
SYNAPOMORPHY	• synapomorphy n. (Cladistics) A derived trait that is shared by two or more taxa of shared ancestry.

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: 122 words
Scrabble in French: 7 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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