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List of 12-letter words containing

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There are 18 twelve-letter words containing A, E, H, I, 2N and Y

ANTIHYDROGENantihydrogen n. (Physics, uncountable) The antimatter equivalent of hydrogen, consisting of an antiproton and an positron…
antihydrogen n. (Physics, countable) An atom of the antimatter equivalent of hydrogen.
ANTIHYDROGEN n. an antimatter form of hydrogen.
ASYNCHRONIESasynchronies n. Plural of asynchrony.
ASYNCHRONY n. lack of synchronisation.
CHASTENINGLYchasteningly adv. In a chastening manner.
CHASTENING adv. CHASTEN, to chastise.
ENANTIOPATHYenantiopathy n. An opposite passion or affection.
enantiopathy n. (Dated, homeopathy) allopathy.
ENANTIOPATHY n. a disease or affliction which protects you from another.
ENCHANTINGLYenchantingly adv. In an enchanting manner.
ENCHANTING adv. ENCHANT, to delight.
HAEMOCYANINShaemocyanins n. Plural of haemocyanin.
HAEMOCYANIN n. an oxygen-carrying pigment in arachnids, equivalent to haemoglobin in mammals.
HEARTENINGLYhearteningly adv. In a heartening way; cheeringly.
HEARTENING adv. HEARTEN, to give courage to, also HARTEN.
HYDRASTININEhydrastinine n. (Organic chemistry) A semisynthetic alkaloid resulting from the hydrolysis of hydrastine.
HYDRASTININE n. a colourless crystalline water-soluble compound whose pharmacological action resembles that of hydrastine.
HYPHENATIONShyphenations n. Plural of hyphenation.
HYPHENATION n. the act of hyphenating.
HYPOXANTHINEhypoxanthine n. (Organic chemistry) A bicyclic heterocycle, 3,7-dihydropurin-6-one, that is an intermediate in the biosynthesis…
HYPOXANTHINE n. a purine base found in plant and animal tissues that yields xanthine on oxidation.
LABYRINTHINElabyrinthine adj. Physically resembling a labyrinth; with the qualities of a maze.
labyrinthine adj. (Anatomy) Relating to the labyrinth of the inner ear.
labyrinthine adj. (Figurative) Convoluted, baffling, confusing, perplexing.
NINNYHAMMERSninnyhammers n. Plural of ninnyhammer.
NINNYHAMMER n. a ninny, a foolish person.
PHAENOTYPINGPHAENOTYPE v. to categorise by phaenotype, the sum of the attributes of an individual, regarded as resulting from the interaction of its genotype with its environment, also PHENOTYPE.
PHENYLALANINphenylalanin n. Dated form of phenylalanine.
PHENYLALANIN n. an essential amino acid present in most proteins, also PHENYLALANINE.
PHENYLAMINESphenylamines n. Plural of phenylamine.
PHENYLAMINE n. another name for aniline.
PHYTONADIONEphytonadione n. (Biochemistry, pharmacology) Alternative form of phytomenadione.
PHYTONADIONE n. phylloquinone, vitamin K1.
SYNTHESPIANSsynthespians n. Plural of synthespian.
SYNTHESPIAN n. a computer-generated image of a film actor used in place of the actor when filming stunts.
TENDINOPATHYtendinopathy n. (Pathology) A disorder of the tendons.

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: 106 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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