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List of 12-letter words containing •••••

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There are 16 twelve-letter words containing A, 2D, H, L and T

ACETALDEHYDE• acetaldehyde n. (Organic chemistry) An organic compound, (CH3CHO). Sometimes called ethanal or acetic aldehyde. See…
• ACETALDEHYDE n. a chemical compound.
BEETLEHEADED• beetleheaded adj. Alternative form of beetle-headed.
• beetle-headed adj. (Obsolete) Mentally dull; stupid.
• BEETLEHEADED adj. like a beetlehead, stupid.
DEMETHYLATED• demethylated v. Simple past tense and past participle of demethylate.
• demethylated adj. (Chemistry) That has been subjected to demethylation.
DEPHLEGMATED• dephlegmated v. Simple past tense and past participle of dephlegmate.
• DEPHLEGMATE v. to distill something, such as alcohol.
DIARTHRODIAL• diarthrodial adj. (Anatomy) Relating to diarthrosis, or movable articulations.
• DIARTHRODIAL adj. of or like a diarthrosis, a joint permitting free movement.
DIETHYLAMIDE• diethylamide n. (Organic chemistry) The derivative of a compound formed by adding an amide group with two ethyl substituents…
• DIETHYLAMIDE n. as in lysergic acid diethylamide, LSD.
FELDSPATHOID• feldspathoid n. (Mineralogy) Any of a small group of igneous, plutonic, and volcanic minerals formed in magma that did…
• feldspathoid adj. (Mineralogy) Resembling a feldspar.
• FELDSPATHOID n. any mineral of a group related to feldspar, also FELSPATHOID, FOID.
HYDROXYLATED• hydroxylated v. Simple past tense and past participle of hydroxylate.
• hydroxylated adj. (Organic chemistry) That has been modified by hydroxylation.
• HYDROXYLATE v. to introduce hydroxyl into.
METALDEHYDES• METALDEHYDE n. a polymer of acetaldehyde.
PREADULTHOOD• preadulthood n. The period of life before adulthood.
SADDLECLOTHS• saddlecloths n. Plural of saddlecloth.
• saddle-cloths n. Plural of saddle-cloth.
• SADDLECLOTH n. a cloth placed under or over a saddle.
SOFTHEADEDLY• softheadedly adv. In a softheaded manner.
• SOFTHEADED adv. having or indicative of a weak, unrealistic, or uncritical mind.
STADTHOLDERS• stadtholders n. Plural of stadtholder.
• STADTHOLDER n. (Dutch) a Dutch viceroy or provincial governor, also STADHOLDER.
STICKHANDLED• stickhandled v. Simple past tense and past participle of stickhandle.
• STICKHANDLE v. to manoeuvre (the puck) deftly in ice hockey.
THALIDOMIDES• thalidomides n. Plural of thalidomide.
• THALIDOMIDE n. a nonbarbiturate sedative drug, withdrawn in 1961 because found to cause malformation in the fetus if taken during pregnancy.
THOUSANDFOLD• thousandfold adj. Multiplied by one thousand (1000), repeated a thousand times.
• thousandfold adj. Having one thousand parts or members.
• thousandfold adv. By a factor of a thousand.

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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