Glossary · Nouns · H
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TermTypeDefinitionClassificationsUpdated
Half GainernounMWEa dive in which the diver throws the feet forward and up to complete a half backward somersault and enters the water facing the diving boardverified
Half LifenounMWEthe time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)verified
Half NelsonnounMWEa wrestling hold in which the holder puts an arm under the opponent's arm and exerts pressure on the back of the neckverified
Half RestnounMWEa musical rest having the time value of half a whole rest or equal in duration to two beats in common timeverified
Half-And-Half DressingnounMWEhalf mayonnaise and half vinaigrette seasoned with minced garlic and mashed anchovies and grated Parmesan cheeseverified
Half-Free MorelnounMWEa morel with the ridged and pitted fertile portion attached to the stipe for about half its lengthverified
Half-Mastnouna position some distance below the top of a mast to which a flag is lowered in mourning or to signal distressverified
Half-Moonnounthe time at which the Moon is at first or last quarter when half its face is illuminatedverified
Half-Staffnouna position some distance below the top of a mast to which a flag is lowered in mourning or to signal distressverified
Halfbeaknountropical and subtropical marine and freshwater fishes having an elongated body and long protruding lower jawverified
Halibut-Liver OilnounMWEa fatty oil from halibut livers that is used as a source of vitamin Averified
Hall PassnounMWEwritten permission from a teacher for a student to be out of the classroom and in the halls of the schoolverified
Hallucinogennouna psychoactive drug that induces hallucinations or altered sensory experiencesverified
Hallucinogenic DrugnounMWEa psychoactive drug that induces hallucinations or altered sensory experiencesverified
Halmnounstems of beans and peas and potatoes and grasses collectively as used for thatching and beddingverified
Haloalkanenounorganic compound in which halogen atoms have been substituted for hydrogen atoms in an alkaneverified
Halogennounany of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ionsverified
Halonnouna compound in which the hydrogen atoms of a hydrocarbon have been replaced by bromine and other halogen atomsverified
Haloperidolnountranquilizer (trade name Haldol) used to treat some psychotic disorders and Tourette's syndromeverified
Hamamelid Dicot FamilynounMWEfamily of mostly woody dicotyledonous flowering plants with flowers often unisexual and often borne in catkinsverified
Hamamelid Dicot GenusnounMWEgenus of mostly woody relatively primitive dicotyledonous flowering plants with flowers often unisexual and often borne in catkinsverified