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List of 12-letter words containing

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There are 19 twelve-letter words containing A, B, H, O, 2R and T

BREAKTHROUGHbreakthrough adj. Characterized by major progress or overcoming some obstacle.
breakthrough adj. (Immunology) Involving the contraction of a disease by a person with a decreased susceptibility, such…
breakthrough adj. (Medicine) The emergence or one or more symptoms of a condition despite medication or other medical treatment.
CARBOHYDRATEcarbohydrate n. (Organic chemistry, nutrition) A sugar, starch, or cellulose that is a food source of energy for an animal or plant.
carbohydrate n. (Colloquial, by extension, metonymically) Any food rich in starch or other carbohydrates.
CARBOHYDRATE n. a compound of carbon, hydrogen and oxygen; extended to similar compounds, the sugars and starches which form the main source of energy in food.
DRAUGHTBOARDdraughtboard n. A checkerboard used to play draughts.
DRAUGHTBOARD n. a board for the playing of draughts.
ERYTHORBATESerythorbates n. Plural of erythorbate.
ERYTHORBATE n. a salt of erythorbic acid that is used in foods as an antioxidant.
ERYTHROBLASTerythroblast n. (Cytology) A cell in the bone marrow from which red blood cells develop.
ERYTHROBLAST n. a cell in bone marrow that develops into an erythrocyte.
HALTERBROKENhalterbroken v. Past participle of halterbreak.
HALTERBREAK v. to break (as a colt) to a halter.
HARBORMASTERharbormaster n. (US, nautical) An official responsible for the enforcement of regulations in a port.
harbor␣master n. Alternative spelling of harbormaster.
HARBORMASTER n. one in charge of a harbour.
MOTHERBOARDSmotherboards n. Plural of motherboard.
MOTHERBOARD n. the board containing the main circuits of an electronic device, especially in computers.
ORTHOBORATESorthoborates n. Plural of orthoborate.
ORTHOBORATE n. a salt of orthoboric acid.
OVERBREATHEDoverbreathed adj. Breathed too much, or by too many people.
OVERBREATHESoverbreathes v. Third-person singular simple present indicative form of overbreathe.
SCRATCHBOARDscratchboard n. (Art) A technique in which drawings are created using sharp knives and tools for etching into a thin…
SCRATCHBOARD n. a scraperboard.
SUBARRHATIONsubarrhation n. (Historical) The ancient custom of betrothal by gift of pledges.
SUBARRHATION n. an ancient form of betrothal in which pledges of money, rings, etc. were given by the man to the woman, also SUBARRATION.
THARBOROUGHSTHARBOROUGH n. (Shakespeare) a mispronunciation of thirdborough, also FARBOROUGH.
TORCHBEARERStorchbearers n. Plural of torchbearer.
TORCHBEARER n. one that carries a torch.
TURBOCHARGEDturbocharged adj. Having a turbocharger.
turbocharged v. Simple past tense and past participle of turbocharge.
TURBOCHARGED adj. equipped with a turbocharger.
TURBOCHARGERturbocharger n. Inlet air compressor for an internal combustion engine (either Otto or Diesel cycle), powered from the exhaust air.
TURBOCHARGER n. a centrifugal blower driven by exhaust gas turbines and used to supercharge an engine.
TURNBROACHESturnbroaches n. Plural of turnbroach.
TURNBROACH n. a turnspit.
WEATHERBOARDweatherboard n. (Nautical) The windward side of a vessel.
weatherboard n. (Nautical) A plank placed over an opening to keep out driven water.
weatherboard n. Any of a series of horizontal boards used to cover the exterior of a timber-framed building; clapboard.

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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