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List of 12-letter words containing

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There are 11 twelve-letter words containing A, C, I, O, S and 2Y

CYANOHYDRINScyanohydrins n. Plural of cyanohydrin.
CYANOHYDRIN n. any of various compounds containing both cyano and hydroxyl groups.
CYCLOTHYMIAScyclothymias n. Plural of cyclothymia.
CYCLOTHYMIA n. a mental condition of alternating moods of euphoria and depression.
HYOSCYAMINEShyoscyamines n. Plural of hyoscyamine.
HYOSCYAMINE n. a drug obtained from henbane.
IDIOSYNCRASYidiosyncrasy n. A behavior or way of thinking that is characteristic of a person.
idiosyncrasy n. A language or behaviour that is particular to an individual or group.
idiosyncrasy n. (Medicine) A peculiar individual reaction to a generally innocuous substance or factor.
LACHRYMOSITYlachrymosity n. The quality of being lachrymose.
LACHRYMOSITY n. the state of being lachrymose, tearful.
PHYCOCYANINSphycocyanins n. Plural of phycocyanin.
PHYCOCYANIN n. any of various bluish-green protein pigments in the cells of cyanobacteria.
POLYSYLLABICpolysyllabic adj. (Of a word) Having more than one syllable; having multiple or many syllables.
polysyllabic adj. (Of spoken or written language) Characterized by or consisting of words having numerous syllables.
polysyllabic n. A word having more than one syllable.
POLYSYNAPTICpolysynaptic adj. (Of a reflex or impulse) of or involving multiple synapses.
POLYSYNAPTIC adj. involving two or more synapses in the central nervous system.
SYMBOLICALLYsymbolically adv. In a symbolic manner.
symbolically adv. By means of symbols or a symbol.
symbolically adv. As symbols or a symbol.
SYNOPTICALLYsynoptically adv. In a synoptic manner.
synoptically adv. With reference to a synopsis.
SYNOPTICAL adv. relating to a synopsis.
SYNTONICALLYsyntonically adv. In syntonic fashion.
SYNTONIC adv. pertaining to syntony; in harmony with one's surroundings, also SYNTONOUS.

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


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