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List of 11-letter words beginning with

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There are 8 eleven-letter words beginning with PSI

PSILOCYBINSpsilocybins n. Plural of psilocybin.
PSILOCYBIN n. a hallucinogenic drug, obtained from the Mexican mushroom Psilocybe mexicana and other mushrooms.
PSILOMELANEpsilomelane n. Any hard, black hydrous manganese oxide with variable amounts of barium and potassium.
PSILOMELANE n. an oxide of manganese, usually with barium, etc., occurring in smooth black botryoidal masses.
PSILOPHYTESpsilophytes n. Plural of psilophyte.
PSILOPHYTE n. any of an order of extinct plants.
PSILOPHYTICpsilophytic adj. Relating to psilophytes.
PSILOPHYTIC adj. of or like a psilophyte, a kind of extinct plant.
PSITTACINESpsittacines n. Plural of psittacine.
PSITTACINE n. a member of the parrot family.
PSITTACOSESpsittacoses n. Plural of psittacosis.
PSITTACOSIS n. contagious parrot disease, causing fever and pneumonia in humans.
PSITTACOSISpsittacosis n. (Pathology) An infection by Chlamydia bacteria, caught from infected birds, and characterised by fever…
PSITTACOSIS n. contagious parrot disease, causing fever and pneumonia in humans.
PSITTACOTICpsittacotic adj. Relating to psittacosis.
PSITTACOTIC adj. relating to psittacosis.

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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