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List of 12-letter words containing

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There are 19 twelve-letter words containing A, M, 2N, 2O and P

AMINOPHENOLSaminophenols n. Plural of aminophenol.
AMINOPHENOL n. any of three isomeric forms that are white soluble crystalline solids, used as a dye and as a photograph developer.
ANTIMONOPOLYantimonopoly adj. (Law) Usually with respect to laws or policies: in opposition to the creation or continuance of a monopoly.
ANTIMONOPOLY adj. opposed to monopoly.
COMPANIONATEcompanionate adj. (Now historical) Designating a proposed type of marriage (or other partnership) in which the partners…
companionate adj. Friendly, companionable.
companionate adj. Pertaining to a (chiefly romantic) relationship that emphasises companionship and mutual respect.
COMPANIONINGcompanioning v. Present participle of companion.
COMPANION v. to keep someone company.
COMPANIONWAYcompanionway n. (Nautical) a staircase or ladder from one deck to another on a ship.
COMPANIONWAY n. the stairs from upper deck of ship to lower deck.
COMPENSATIONcompensation n. The act or principle of compensating.
compensation n. Something which is regarded as an equivalent; something which compensates for loss.
compensation n. (Finance) The extinction of debts of which two persons are reciprocally debtors by the credits of which…
COMPLANATIONCOMPLANATION n. the state of being flattened.
COMPONENTIALcomponential adj. Of, pertaining to, or comprising components.
COMPONENTIAL adj. relating to a component, also COMPONENTAL.
ENANTIOMORPHenantiomorph n. A mirror image, a form related to another as an object is to its image in a mirror.
enantiomorph n. Either of a pair of crystals that are mirror images of each other, and are optically active.
enantiomorph n. (Chemistry) A similar molecule or compound; an enantiomer.
HARMONIPHONEharmoniphone n. A free-reed musical instrument played with a keyboard, in which the sounds are produced by reeds set…
HARMONIPHONE n. a keyboard wind instrument with reeds, also HARMONIPHON.
HARMONIPHONSharmoniphons n. Plural of harmoniphon.
HARMONIPHON n. a keyboard wind instrument with reeds, also HARMONIPHONE.
MELANOTROPINmelanotropin n. (Endocrinology, biochemistry) Synonym of melanocyte-stimulating hormone.
MELANOTROPIN n. a hormone secreted by the pituitary gland which stimulates the production of melanin by melanocytes.
MEROPLANKTONmeroplankton n. (Biology) Any organism that spends part of its life-cycle (especially the larval stage) as plankton.
MEROPLANKTON n. plankton consisting of certain larvae that do not spend all their life as plankton.
MONODELPHIANmonodelphian n. (Zoology) One of the Monodelphia.
MONODELPHIAN n. any placental mammal that is a member of the group Monodelphi.
MONOGRAPHINGmonographing v. Present participle of monograph.
MONOGRAPH v. to write a monograph.
MONOSYNAPTICmonosynaptic adj. (Neuroanatomy) Having, or involving a single synapse.
monosynaptic adj. (Derogatory) Stupid, lacking in brainpower.
MONOSYNAPTIC adj. having or involving a single neural synapse.
MOUNTAINTOPSmountaintops n. Plural of mountaintop.
mountain␣tops n. Plural of mountain top.
MOUNTAINTOP n. the summit of a mountain.
NONCOMPLIANTnoncompliant adj. Not compliant; rebellious.
noncompliant n. One who fails to comply, for example with a law.
non-compliant adj. Alternative form of noncompliant.
PRONOMINALLYpronominally adv. (Linguistics) In a pronominal manner; as a pronoun.
PRONOMINAL adv. of or like a pronoun.

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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