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List of 12-letter words containing

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There are 14 twelve-letter words containing A, N, O, 2P, S and Y

HYPNOPAEDIASHYPNOPAEDIA n. training or instruction during sleep.
HYPNOPHOBIASHYPNOPHOBIA n. an irrational fear of sleep.
HYPOPLASTRONhypoplastron n. The third lateral plate in the plastron of turtles.
HYPOPLASTRON n. the plate behind the hyoplastron in a turtle's plastron.
INAPPOSITELYinappositely adv. In a way that is not apposite.
INAPPOSITE adv. not apposite.
LYMPHOPENIASlymphopenias n. Plural of lymphopenia.
LYMPHOPENIA n. an abnormally low level of lymphocytes in the blood.
PHYCOPHAEINSPHYCOPHAEIN n. a brown pigment found in seaweeds.
PHYLLOPLANESphylloplanes n. Plural of phylloplane.
PHYLLOPLANE n. the surface of a leaf considered as a habitat, esp. for microorganisms.
PLATINOTYPESplatinotypes n. Plural of platinotype.
PLATINOTYPE n. an obsolete method of photography by reducing a compound of platinum.
POLYSYNAPTICpolysynaptic adj. (Of a reflex or impulse) of or involving multiple synapses.
POLYSYNAPTIC adj. involving two or more synapses in the central nervous system.
POSTSYNAPTICpostsynaptic adj. (Cytology) In a synapse, of or pertaining to the neuron that bears receptors for neurotransmitter released…
POSTSYNAPTIC adj. occurring after synapsis.
PROPYLAMINESpropylamines n. Plural of propylamine.
PROPYLAMINE n. an amine of propyl.
PSILANTHROPYpsilanthropy n. (Theology) The doctrine that Jesus Christ was merely human.
PSILANTHROPY n. the belief that Christ was not divine but divinely inspired.
SYNAPOMORPHYsynapomorphy n. (Cladistics) A derived trait that is shared by two or more taxa of shared ancestry.
TRYPTOPHANEStryptophanes n. Plural of tryptophane.
TRYPTOPHANE n. an essential amino acid, also TRYPTOPHAN.

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: 81 words
  • Scrabble in French: 4 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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