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List of 12-letter words containing

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There are 19 twelve-letter words containing F, N, 2O, P and S

FETOPROTEINSfetoproteins n. Plural of fetoprotein.
FETOPROTEIN n. any of several fetal antigens present in the adult in some abnormal conditions.
FORCIPATIONSFORCIPATION n. torture by pinching with forceps.
FRANCOPHOBESFrancophobes n. Plural of Francophobe.
FRANCOPHOBE n. a hater of things French.
FRANCOPHONESfrancophones n. Plural of francophone.
Francophones n. Plural of Francophone.
FRANCOPHONE n. a French speaker.
MONOSPECIFICmonospecific adj. (Taxonomy, Of a genus) containing only one known species.
monospecific adj. (Microbiology, Of a group of antibodies) with affinity for the same antigen.
MONOSPECIFIC adj. specific for a single antigen or receptor site on an antigen.
PERFORATIONSperforations n. Plural of perforation.
PERFORATION n. the act of perforating.
PHONOFIDDLESphonofiddles n. Plural of phonofiddle.
PHONOFIDDLE n. a one-stringed musical instrument which emits sounds through a metal amplifying horn.
PHOTOFISSIONphotofission n. (Nuclear physics) Nuclear fission as the result of the absorption of a gamma ray or other high-energy photon.
photofission v. (Nuclear physics) To undergo, or cause to undergo, photofission.
PHOTOFISSION n. nuclear fission induced by gamma rays.
PROFANATIONSprofanations n. Plural of profanation.
PROFANATION n. the act or an instance of profaning.
PROFESSIONALprofessional n. A person who belongs to a profession.
professional n. A person who earns their living from a specified activity.
professional n. (Euphemistic) A prostitute.
PROFOUNDNESSprofoundness n. The quality of being profound; profundity.
PROFOUNDNESS n. the state of being profound.
PUFFTALOONASPUFFTALOONAS n. (Australian) a type of fried cake, eaten hot with jam, honey or sugar, also PUFTALOON, PUFTALOONIES.
PUFTALOONIESPUFTALOONIES n. (Australian) a type of fried cake, eaten hot with jam, honey or sugar, also PUFFTALOONAS, PUFTALOON.
PUSSYFOOTINGpussyfooting v. Present participle of pussyfoot.
PUSSYFOOTING n. the act of approaching a topic with great caution.
RUSTPROOFINGrustproofing v. Present participle of rustproof.
RUSTPROOFING n. the act of making resistant to rust, such as by applying a coating.
SOUNDPROOFEDsoundproofed v. Simple past tense and past participle of soundproof.
SOUNDPROOF v. to insulate so as to obstruct the passage of sound.
TEASPOONFULSteaspoonfuls n. Plural of teaspoonful.
TEASPOONFUL n. the contents of a teaspoon.
TEASPOONSFULteaspoonsful n. Plural of teaspoonful.
TEASPOONFUL n. the contents of a teaspoon.
TOPLOFTINESStoploftiness n. The quality of being toplofty.
TOPLOFTINESS n. the state of being toplofty, high and mighty.

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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