henry | (noun) a unit of inductance in which an induced electromotive force of one volt is produced when the current is varied at the rate of one ampere per second | Synonyms: H |
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hepadnavirus | (noun) a group of animal DNA viruses including viruses of ducks and woodchucks and squirrels and others as well as the virus causing hepatitis B in humans | - |
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heparin | (noun) a polysaccharide produced in basophils (especially in the lung and liver) and that inhibits the activity of thrombin in coagulation of the blood; it (trade names Lipo-Hepin and Liquaemin) is used as an anticoagulant in the treatment of thrombosis and in heart surgery | Synonyms: Lipo-Hepin, Liquaemin |
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hepatic | (noun) any of numerous small green nonvascular plants of the class Hepaticopsida growing in wet places and resembling green seaweeds or leafy mosses | Synonyms: liverwort |
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hepatica | (noun) any of several plants of the genus Hepatica having three-lobed leaves and white or pinkish flowers in early spring; of moist and mossy subalpine woodland areas of north temperate regions | Synonyms: liverleaf |
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(noun) a common liverwort | Synonyms: Marchantia polymorpha |
hepatitis | (noun) inflammation of the liver caused by a virus or a toxin | - |
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hepatocarcinoma | (noun) carcinoma of the liver | Synonyms: hepatocellular carcinoma, hepatoma, malignant hepatoma |
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hepatoflavin | (noun) a B vitamin that prevents skin lesions and weight loss | Synonyms: lactoflavin, ovoflavin, riboflavin, vitamin B2, vitamin G |
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hepatoma | (noun) carcinoma of the liver | Synonyms: hepatocarcinoma, hepatocellular carcinoma, malignant hepatoma |
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hepatomegaly | (noun) abnormal enlargement of the liver | Synonyms: megalohepatia |
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hepatotoxin | (noun) any toxin that affects the liver | - |
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heptad | (noun) the cardinal number that is the sum of six and one | Synonyms: 7, septenary, septet, seven, sevener, VII |
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heptagon | (noun) a seven-sided polygon | - |
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heptane | (noun) a colorless volatile highly flammable liquid obtained from petroleum and used as an anesthetic or a solvent or in determining octane ratings | - |
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heptasyllable | (noun) a word or line of verse of seven syllables. | - |
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heptose | (noun) a monosaccharide with seven carbon atoms. | - |
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herald | (noun) something that precedes and indicates the approach of something or someone | Synonyms: forerunner, harbinger, precursor, predecessor |
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(noun) (formal) a person who announces important news | Synonyms: trumpeter |
heraldry | (noun) emblem indicating the right of a person to bear arms | - |
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(noun) the study and classification of armorial bearings and the tracing of genealogies | - |
herb | (noun) aromatic potherb used in cookery for its savory qualities | - |
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(noun) a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests | Synonyms: herbaceous plant |
herbage | (noun) succulent herbaceous vegetation of pastureland | Synonyms: pasturage |
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herbal | (noun) tea-like drink made of leaves of various herbs | Synonyms: herb tea, herbal tea |
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herbalist | (noun) a therapist who heals by the use of herbs | Synonyms: herb doctor |
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herbarium | (noun) a collection of dried plants that are mounted and systematically classified for study | - |
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herbicide | (noun) a chemical agent that destroys plants or inhibits their growth | Synonyms: weed killer, weedkiller |
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herbivore | (noun) any animal that feeds chiefly on grass and other plants | - |
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herd | (noun) a group of cattle or sheep or other domestic mammals all of the same kind that are herded by humans | - |
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(noun) a group of wild mammals of one species that remain together: antelope or elephants or seals or whales or zebra | - |
(noun) a crowd especially of ordinary or undistinguished persons or things | Synonyms: ruck |
herder | (noun) someone who drives a herd | Synonyms: drover, herdsman |
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herdsman | (noun) someone who drives a herd | Synonyms: drover, herder |
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here | (noun) the present location; this place; location, proximal pronoun; demonstrative pronoun, location; quantifier: demonstrative determiner, singular, proximal | - |
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hereafter | (noun) the time yet to come | Synonyms: future, futurity, time to come |
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(noun) life after death | Synonyms: afterlife |
hereditament | (noun) any property (real or personal or mixed) that can be inherited | - |
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hereditarianism | (noun) the philosophical doctrine that heredity is more important than environment in determining intellectual growth | - |
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heredity | (noun) the total of inherited attributes | Synonyms: genetic endowment |
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(noun) the biological process whereby genetic factors are transmitted from one generation to the next | - |
hereness | (noun) the state of being here in this place | - |
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heresy | (noun) a belief that rejects the orthodox tenets of a religion | Synonyms: unorthodoxy |
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(noun) any opinions or doctrines at variance with the official or orthodox position | Synonyms: heterodoxy, unorthodoxy |
heretic | (noun) a person who holds religious beliefs in conflict with the dogma of the Roman Catholic Church | Synonyms: misbeliever, religious outcast |
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(noun) a person who holds unorthodox opinions in any field (not merely religion) | - |
heritage | (noun) hereditary succession to a title or an office or property | Synonyms: inheritance |
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(noun) any attribute or immaterial possession that is inherited from ancestors | Synonyms: inheritance |
(noun) practices that are handed down from the past by tradition | - |
(noun) that which is inherited; a title or property or estate that passes by law to the heir on the death of the owner | Synonyms: inheritance |
heritor | (noun) a person who is entitled by law or by the terms of a will to inherit the estate of another | Synonyms: heir, inheritor |
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herm | (noun) a statue consisting of a squared stone pillar with a carved head (usually a bearded Hermes) on top; used in ancient Greece as a boundary marker or signpost | - |
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hermaphrodism | (noun) congenital condition in which external genitalia and internal sex organs have both male and female characteristics | Synonyms: hermaphroditism |
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hermaphrodite | (noun) one having both male and female sexual characteristics and organs; at birth an unambiguous assignment of male or female cannot be made | Synonyms: androgyne, epicene, epicene person, gynandromorph, intersex |
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hermaphroditism | (noun) showing characteristics of both sexes | Synonyms: androgyny, bisexuality |
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(noun) congenital condition in which external genitalia and internal sex organs have both male and female characteristics | Synonyms: hermaphrodism |
hermeneutics | (noun) the branch of theology that deals with principles of exegesis | - |
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hermit | (noun) one who lives in solitude | Synonyms: recluse, solitary, solitudinarian, troglodyte |
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(noun) one retired from society for religious reasons | Synonyms: anchorite |
hermitage | (noun) the abode of a hermit | - |
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hernia | (noun) rupture in smooth muscle tissue through which a bodily structure protrudes | Synonyms: herniation |
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herniation | (noun) rupture in smooth muscle tissue through which a bodily structure protrudes | Synonyms: hernia |
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hero | (noun) the principal character in a play or movie or novel or poem | - |
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(noun) a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States | Synonyms: bomber, Cuban sandwich, grinder, hero sandwich, hoagie, hoagy, Italian sandwich, poor boy, sub, submarine, submarine sandwich, torpedo, wedge, zep |
(noun) a person distinguished by exceptional courage and nobility and strength | - |
(noun) someone who fights for a cause | Synonyms: champion, fighter, paladin |
(noun) (classical mythology) a being of great strength and courage celebrated for bold exploits; often the offspring of a mortal and a god | - |
heroic | (noun) a verse form suited to the treatment of heroic or elevated themes; dactylic hexameter or iambic pentameter | Synonyms: heroic meter, heroic verse |
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heroics | (noun) ostentatious or vainglorious or extravagant or melodramatic conduct | - |
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heroin | (noun) a narcotic that is considered a hard drug; a highly addictive morphine derivative; intravenous injection provides the fastest and most intense rush | Synonyms: diacetylmorphine |
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heroine | (noun) a woman possessing heroic qualities or a woman who has performed heroic deeds | - |
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(noun) the main good female character in a work of fiction | - |
heroism | (noun) the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle) | Synonyms: gallantry, valiance, valiancy, valor, valorousness, valour |
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heroization | (noun) the act, or the result, of making someone into a hero. | - |
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heron | (noun) grey or white wading bird with long neck and long legs and (usually) long bill | - |
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heronry | (noun) a breeding ground for herons; a heron rookery | - |
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herpangia | (noun) a viral infection (usually in children) marked by sore throat and fever and papules in the mouth and throat and headache and abdominal pain; usually subsides in a short time | - |
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herpes | (noun) any of the animal viruses that cause painful blisters on the skin | Synonyms: herpes virus |
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(noun) viral diseases causing eruptions of the skin or mucous membrane | - |
herpetologist | (noun) a zoologist who studies reptiles and amphibians | - |
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herpetology | (noun) the branch of zoology concerned with reptiles and amphibians | - |
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herrerasaur | (noun) a kind of theropod dinosaur found in Argentina | Synonyms: herrerasaurus |
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herrerasaurus | (noun) a kind of theropod dinosaur found in Argentina | Synonyms: herrerasaur |
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herring | (noun) commercially important food fish of northern waters of both Atlantic and Pacific | Synonyms: Clupea harangus |
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(noun) valuable flesh of fatty fish from shallow waters of northern Atlantic or Pacific; usually salted or pickled | - |
herringbone | (noun) a twilled fabric with a herringbone pattern | - |
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(noun) a pattern of columns of short parallel lines with all the lines in one column sloping one way and lines in adjacent columns sloping the other way; it is used in weaving, masonry, parquetry, embroidery | Synonyms: herringbone pattern |
hertz | (noun) the unit of frequency; one hertz has a periodic interval of one second (named for Heinrich Rudolph Hertz) | Synonyms: cps, cycle, cycle per second, cycles/second, Hz |
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hesitance | (noun) a feeling of diffidence and indecision about doing something | Synonyms: hesitancy |
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hesitancy | (noun) a certain degree of unwillingness | Synonyms: disinclination, hesitation, indisposition, reluctance |
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(noun) a feeling of diffidence and indecision about doing something | Synonyms: hesitance |
hesitater | (noun) one who hesitates (usually out of fear) | Synonyms: hesitator, vacillator, waverer |
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hesitation | (noun) the act of pausing uncertainly | Synonyms: falter, faltering, waver |
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(noun) a certain degree of unwillingness | Synonyms: disinclination, hesitancy, indisposition, reluctance |
(noun) indecision in speech or action | Synonyms: vacillation, wavering |
hesitator | (noun) one who hesitates (usually out of fear) | Synonyms: hesitater, vacillator, waverer |
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hessian | (noun) (19th century) a man's high tasseled boot | Synonyms: Hessian boot, jackboot, Wellington, Wellington boot |
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hessonite | (noun) a garnet ranging in color from yellow to brown | Synonyms: cinnamon stone, essonite |
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heterocycle | (noun) a ring of atoms of more than one kind; especially a ring of carbon atoms containing at least one atom that is not carbon | Synonyms: heterocyclic ring |
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(noun) a compound containing a heterocyclic ring | Synonyms: heterocyclic, heterocyclic compound |
heterocyclic | (noun) a compound containing a heterocyclic ring | Synonyms: heterocycle, heterocyclic compound |
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heterodoxy | (noun) the quality of being unorthodox | Synonyms: unorthodoxy |
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(noun) any opinions or doctrines at variance with the official or orthodox position | Synonyms: heresy, unorthodoxy |
heterogeneity | (noun) the quality of being diverse and not comparable in kind | Synonyms: heterogeneousness |
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heterogeneousness | (noun) the quality of being diverse and not comparable in kind | Synonyms: heterogeneity |
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heterogenesis | (noun) the alternation of two or more different forms in the life cycle of a plant or animal | Synonyms: alternation of generations, xenogenesis |
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heterogloss | (noun) the locative boundary of a certain linguistic feature, such as the pronunciation of a vowel, the meaning of a word, or use of some syntactic feature. | Synonyms: isogloss |
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heterograft | (noun) tissue from an animal of one species used as a temporary graft (as in cases of severe burns) on an individual of another species | Synonyms: xenograft |
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heterology | (noun) (biology) the lack of correspondence of apparently similar body parts | - |
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heterometabolism | (noun) development of insects with incomplete metamorphosis in which no pupal stage precedes maturity | Synonyms: heterometaboly |
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heterometaboly | (noun) development of insects with incomplete metamorphosis in which no pupal stage precedes maturity | Synonyms: heterometabolism |
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heteronym | (noun) two words are heteronyms if they are spelled the same way but differ in pronunciation | - |
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heteroploid | (noun) (genetics) an organism or cell having a chromosome number that is not an even multiple of the haploid chromosome number for that species | - |
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heteroploidy | (noun) the condition of being heteroploid | - |
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heterosexism | (noun) discrimination in favor of heterosexual and against homosexual people | - |
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heterosexual | (noun) a person having a sexual orientation to persons of the opposite sex | Synonyms: heterosexual person, straight, straight person |
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heterosexualism | (noun) a sexual attraction to (or sexual relations with) persons of the opposite sex | Synonyms: heterosexuality, straightness |
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heterosexuality | (noun) a sexual attraction to (or sexual relations with) persons of the opposite sex | Synonyms: heterosexualism, straightness |
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heterosis | (noun) (genetics) the tendency of a crossbred organism to have qualities superior to those of either parent | Synonyms: hybrid vigor |
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heterospory | (noun) the development of both microspores and megaspores | - |
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heterostracan | (noun) extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian | - |
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heterotaxy | (noun) any abnormal position of the organs of the body | Synonyms: transposition |
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heterotroph | (noun) an organism that depends on complex organic substances for nutrition | - |
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heterozygosity | (noun) the state of being heterozygous; having two different alleles of the same gene | - |
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heterozygote | (noun) (genetics) an organism having two different alleles of a particular gene and so giving rise to varying offspring | - |
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heth | (noun) the 8th letter of the Hebrew alphabet | - |
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heulandite | (noun) a group of minerals of the zeolite family consisting of a hydrous aluminum silicate of sodium and calcium | - |
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heuristic | (noun) a commonsense rule (or set of rules) intended to increase the probability of solving some problem | Synonyms: heuristic program, heuristic rule |
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