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List of 15-letter words containing

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There are 13 fifteen-letter words containing A, D, 2E, I, N, P and Y

CYCLOPENTADIENEcyclopentadiene n. (Organic chemistry) an unsaturated alicyclic hydrocarbon, C5H6; it forms complexes with some transition…
CYCLOPENTADIENE n. a colourless liquid unsaturated cyclic hydrocarbon obtained in the cracking of petroleum hydrocarbons and the distillation of coal tar, used in the manufacture of plastics and insecticides.
CYPROHEPTADINEScyproheptadines n. Plural of cyproheptadine.
CYPROHEPTADINE n. a powerful antihistamine drug used to treat allergies.
DAGUERREOTYPINGdaguerreotyping v. Present participle of daguerreotype.
DAGUERREOTYPE v. to develop by daguerreotype, a method of photography by mercury vapour development of silver iodide.
DIPHENHYDRAMINEdiphenhydramine n. (Pharmacology) An antihistamine and anticholinergic drug that blocks the effect of histamine at H1 receptor…
DIPHENHYDRAMINE n. a type of antihistamine.
ENCYCLOPAEDICALencyclopaedical adj. Of or pertaining to encyclopaediae.
encyclopædical adj. Archaic spelling of encyclopaedical.
ENCYCLOPAEDICAL adj. of or relating to an encyclopedia; comprehensive; full of information, also ENCYCLOPEDIC, ENCYCLOPEDICAL.
ENCYCLOPAEDISMSENCYCLOPAEDISM n. the compiling of encyclopaedias, also ENCYCLOPEDISM.
ENCYCLOPAEDISTSencyclopaedists n. Plural of encyclopaedist.
encyclopædists n. Plural of encyclopædist.
ENCYCLOPAEDIST n. one who compiles encyclopaedias, also ENCYCLOPEDIST.
HYPERADRENALISMhyperadrenalism n. (Pathology) An excessive level of adrenal hormones in the body.
HYPERADRENALISM n. excessive activity of the adrenal gland.
HYPERVENTILATEDhyperventilated v. Simple past tense and past participle of hyperventilate.
HYPERVENTILATE v. to breathe rapidly and deeply.
LYMPHADENITISESlymphadenitises n. Plural of lymphadenitis.
LYMPHADENITIS n. inflammation of the lymph nodes.
METHYLPHENIDATEmethylphenidate n. (Medicine) A stimulant used to treat attention deficit hyperactivity disorder and narcolepsy, better…
METHYLPHENIDATE n. a stimulant used in treating attention deficit disorder.
PERPENDICULARLYperpendicularly adv. In a perpendicular manner.
PERPENDICULAR adv. at right angles to a line or plane.
UNDEPENDABILITYundependability n. The quality of being undependable.

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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See this list for:

  • English Wiktionary: 123 words
  • Scrabble in French: 3 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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