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There are 16 fifteen-letter words containing D, 2E, I, O, P, T 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.
DAGUERREOTYPIESDAGUERREOTYPY n. the art of daguerreotyping.
DAGUERREOTYPINGdaguerreotyping v. Present participle of daguerreotype.
DAGUERREOTYPE v. to develop by daguerreotype, a method of photography by mercury vapour development of silver iodide.
DAGUERREOTYPISTdaguerreotypist n. A person who makes daguerreotypes.
DAGUERREOTYPIST n. one who practises daguerreotyping, also DAGUERREOTYPER.
DIPHENYLKETONESdiphenylketones n. Plural of diphenylketone.
DIPHENYLKETONE n. the aromatic ketone benzophenone.
ENCYCLOPAEDISTSencyclopaedists n. Plural of encyclopaedist.
encyclopædists n. Plural of encyclopædist.
ENCYCLOPAEDIST n. one who compiles encyclopaedias, also ENCYCLOPEDIST.
EPICONDYLITISESEPICONDYLITIS n. inflammation of the epicondyle.
HYPERMODERNISTShypermodernists n. Plural of hypermodernist.
HYPERMODERNIST n. a practitioner of a hypermodernist style in art.
HYPERPRODUCTIVEhyperproductive adj. Exceptionally productive.
LEPIDOPTEROLOGYlepidopterology n. (Biology, zoology, entomology) The scientific study of butterflies and moths (the Lepidoptera).
lepidopterology n. Lepidoptery, (the hobby of butterfly collecting).
LEPIDOPTEROLOGY n. the study of butterflies and moths.
PERISSODACTYLESPERISSODACTYLE n. an animal of the Perissodactyla, a division of ungulates with an odd number of toes, including the horse, tapir and rhinoceros, also PERISSODACTYL.
POLIOMYELITIDESpoliomyelitides n. Plural of poliomyelitis.
POLIOMYELITIS n. a virus disease of the spinal cord, often causing paralysis; infantile paralysis.
POLYNUCLEOTIDESpolynucleotides n. Plural of polynucleotide.
POLYNUCLEOTIDE n. a polymeric chain of nucleotides.
RADIOTELEGRAPHYradiotelegraphy n. The process and techniques of sending telegrams using radio waves rather than wires.
radio␣telegraphy n. The transmission of Morse code (etc) using radio.
RADIOTELEGRAPHY n. signalling by radiotelegraph, wireless telegraphy.
SERENDIPITOUSLYserendipitously adv. By serendipity; by blind luck in combination with wisdom; by fortunate accident.
SERENDIPITOUS adv. obtained or characterized by serendipity.

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: 158 words
  • Scrabble in French: 17 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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