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There are 14 thirteen-letter words containing H, I, N, 2O, R, S and Y

CHLOROHYDRINSchlorohydrins n. Plural of chlorohydrin.
CHLOROHYDRIN n. any of various organic compounds derived from diols or polyhydroxy alcohols by substitution of chlorine for part of the hydroxyl groups.
DISHONOURABLYdishonourably adv. (Britain) Alternative spelling of dishonorably.
DISHONOURABLE adv. not honourable, also DISHONORABLE.
HYDROFORMINGSHYDROFORMING n. the catalytic reforming of petroleum to increase the proportion of aromatic and branched-chain hydrocarbons.
HYDROLYSATIONhydrolysation n. Alternative form of hydrolyzation.
HYDROLYSATION n. the process of hydrolysing, also HYDROLYZATION.
HYDROQUINONEShydroquinones n. Plural of hydroquinone.
HYDROQUINONE n. another name for quinol.
HYPOCHONDRIAShypochondrias n. Plural of hypochondria.
HYPOCHONDRIA n. suffering from imaginary illness.
ISOCHRONOUSLYisochronously adv. In an isochronous manner.
ISOCHRONOUS adv. having the same duration; recurring at equal intervals.
NARCOHYPNOSISnarcohypnosis n. A hypnotic state induced by narcotics.
NARCOHYPNOSIS n. the use of narcotics to produce hypnosis.
POLYHISTORIANpolyhistorian n. Synonym of polyhistor.
POLYHISTORIAN n. a person of great and varied learning, also POLYHISTOR.
PORPHYROPSINSporphyropsins n. Plural of porphyropsin.
PORPHYROPSIN n. a purple pigment in the retinal rods of freshwater fishes that resembles rhodopsin.
PYRITOHEDRONSpyritohedrons n. Plural of pyritohedron.
PYRITOHEDRON n. a pentagonal dodecahedron.
SYNCHONDROSISsynchondrosis n. (Anatomy) A form of only slightly-moveable articulation between bones joined by hyaline cartilage, as…
SYNCHONDROSIS n. synarthrosis in which the bone surfaces are connected by cartilage.
THYROTROPHINSthyrotrophins n. Plural of thyrotrophin.
THYROTROPHIN n. a hormone, produced in the anterior lobe of the pituitary gland, which stimulates the thyroid, also THYROTROPIN.
TRICHOPHYTONStrichophytons n. Plural of trichophyton.
TRICHOPHYTON n. any fungus of the genus Trichophyton, causing ringworm.

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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See this list for:

  • English Wiktionary: 99 words
  • Scrabble in French: 18 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 1 word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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