| hypnotism | (noun) the act of inducing hypnosis | Synonyms: mesmerism, suggestion |
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| hypnotist | (noun) a person who induces hypnosis | Synonyms: hypnotiser, hypnotizer, mesmerist, mesmerizer |
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| hypnotizer | (noun) a person who induces hypnosis | Synonyms: hypnotiser, hypnotist, mesmerist, mesmerizer |
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| hypo | (noun) a piston syringe that is fitted with a hypodermic needle for giving injections | Synonyms: hypodermic, hypodermic syringe |
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| (noun) a compound used as a fixing agent in photographic developing | Synonyms: sodium thiosulfate, sodium thiosulphate |
| hypoadrenalism | (noun) a glandular disorder caused by failure of function of the cortex of the adrenal gland and marked by anemia and prostration with brownish skin | Synonyms: Addison's disease, Addison's syndrome, hypoadrenocorticism |
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| hypoadrenocorticism | (noun) a glandular disorder caused by failure of function of the cortex of the adrenal gland and marked by anemia and prostration with brownish skin | Synonyms: Addison's disease, Addison's syndrome, hypoadrenalism |
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| hypobasidium | (noun) special cell constituting the base of the basidium in various fungi especially of the order Tremellales | - |
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| hypobetalipoproteinemia | (noun) a hereditary disorder characterized by low levels of beta-lipoproteins and lipids and cholesterol | - |
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| hypoblast | (noun) the inner germ layer that develops into the lining of the digestive and respiratory systems | Synonyms: endoblast, endoderm, entoblast, entoderm |
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| hypocalcaemia | (noun) abnormally low level of calcium in the blood; associated with hypoparathyroidism or kidney malfunction or vitamin D deficiency | Synonyms: hypocalcemia |
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| hypocalcemia | (noun) abnormally low level of calcium in the blood; associated with hypoparathyroidism or kidney malfunction or vitamin D deficiency | Synonyms: hypocalcaemia |
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| hypocapnia | (noun) a state in which the level of carbon dioxide in the blood is lower than normal; can result from deep or rapid breathing | Synonyms: acapnia |
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| hypocellularity | (noun) the state of having abnormally few cells | - |
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| hypochlorite | (noun) any salt or ester of hypochlorous acid | - |
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| hypochondria | (noun) chronic and abnormal anxiety about imaginary symptoms and ailments | Synonyms: hypochondriasis |
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| hypochondriac | (noun) a patient with imaginary symptoms and ailments | - |
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| hypochondriasis | (noun) chronic and abnormal anxiety about imaginary symptoms and ailments | Synonyms: hypochondria |
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| hypochondrium | (noun) the upper region of the abdomen just below the lowest ribs on either side of the epigastrium | - |
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| hypocorism | (noun) a name of endearment (especially one using a diminutive suffix) | Synonyms: pet name |
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| hypocrisy | (noun) insincerity by virtue of pretending to have qualities or beliefs that you do not really have | - |
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| (noun) an expression of agreement that is not supported by real conviction | Synonyms: lip service |
| hypocrite | (noun) a person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motives | Synonyms: dissembler, dissimulator, phoney, phony, pretender |
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| hypocycloid | (noun) a line generated by a point on a circle that rolls around inside another circle | - |
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| hypodermic | (noun) a piston syringe that is fitted with a hypodermic needle for giving injections | Synonyms: hypo, hypodermic syringe |
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| hypodermis | (noun) layer of cells that secretes the chitinous cuticle in e.g. arthropods | - |
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| hypoesthesia | (noun) impairment of tactile sensitivity; decrease of sensitivity | Synonyms: hypesthesia |
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| hypogammaglobulinemia | (noun) an abnormally low concentration of gamma globulin in the blood and increased risk of infection | - |
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| hypoglossal | (noun) supplies intrinsic muscles of the tongue and other tongue muscles | Synonyms: hypoglossal nerve, nervus hypoglosus, twelfth cranial nerve |
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| hypoglycaemia | (noun) abnormally low blood sugar usually resulting from excessive insulin or a poor diet | Synonyms: hypoglycemia |
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| hypoglycemia | (noun) abnormally low blood sugar usually resulting from excessive insulin or a poor diet | Synonyms: hypoglycaemia |
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| hypogonadism | (noun) incompetence of the gonads (especially in the male with low testosterone); results in deficient development of secondary sex characteristics and (in prepubertal males) a body with long legs and a short trunk | - |
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| hypokalemia | (noun) abnormally low level of potassium in the circulating blood leading to weakness and heart abnormalities; associated with adrenal tumors or starvation or taking diuretics | - |
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| hypolipoproteinemia | (noun) any of various disorders of lipoprotein and cholesterol metabolism that result in low levels of lipoprotein and cholesterol in the circulating blood | - |
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| hyponatremia | (noun) abnormally low level of sodium in the blood; associated with dehydration | - |
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| hyponym | (noun) a word that is more specific than a given word | Synonyms: subordinate, subordinate word |
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| hyponymy | (noun) the semantic relation of being subordinate or belonging to a lower rank or class | Synonyms: subordination |
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| hypoparathyroidism | (noun) inadequate secretion of parathyroid hormone resulting in abnormally low levels of calcium in the blood | - |
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| hypophysectomy | (noun) surgical removal of the pituitary gland | - |
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| hypophysis | (noun) the master gland of the endocrine system; located at the base of the brain | Synonyms: pituitary, pituitary body, pituitary gland |
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| hypopigmentation | (noun) unusual lack of skin color | - |
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| hypoplasia | (noun) underdevelopment of an organ because of a decrease in the number of cells | - |
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| hypopnea | (noun) slow or shallow breathing | - |
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| hypoproteinemia | (noun) abnormally low level of protein in the blood; can indicate inadequate diet or intestinal or renal disorders | - |
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| hyposmia | (noun) lessened sensitivity to odors | - |
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| hypospadias | (noun) an abnormal condition in males in which the urethra opens on the under surface of the penis | - |
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| hypostasis | (noun) (metaphysics) essential nature or underlying reality | - |
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| (noun) any of the three persons of the Godhead constituting the Trinity especially the person of Christ in which divine and human natures are united | Synonyms: hypostasis of Christ |
| (noun) the accumulation of blood in an organ | - |
| (noun) the suppression of a gene by the effect of an unrelated gene | Synonyms: epistasis |
| hypostatisation | (noun) regarding something abstract as a material thing | Synonyms: hypostatization, reification |
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| hypostatization | (noun) regarding something abstract as a material thing | Synonyms: hypostatisation, reification |
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| hypotension | (noun) abnormally low blood pressure | - |
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| hypotensive | (noun) a person who has abnormally low blood pressure | - |
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| hypotenuse | (noun) the side of a right triangle opposite the right angle | - |
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| hypothalamus | (noun) a basal part of the diencephalon governing autonomic nervous system | - |
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| hypothermia | (noun) subnormal body temperature | - |
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| hypothesis | (noun) a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena | Synonyms: possibility, theory |
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| (noun) a proposal intended to explain certain facts or observations | - |
| (noun) a message expressing an opinion based on incomplete evidence | Synonyms: conjecture, guess, speculation, supposition, surmisal, surmise |
| hypothetical | (noun) a hypothetical possibility, circumstance, statement, proposal, situation, etc. | - |
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| hypothrombinemia | (noun) a low level of prothrombin (factor II) in the circulating blood; results in long clotting time and poor clot formation and sometimes excessive bleeding; can result from vitamin K deficiency | - |
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| hypothyroidism | (noun) an underactive thyroid gland; a glandular disorder resulting from insufficient production of thyroid hormones | - |
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| hypotonia | (noun) (of muscular tissue) the state of being hypotonic | Synonyms: hypotonicity, hypotonus |
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| hypotonicity | (noun) (of muscular tissue) the state of being hypotonic | Synonyms: hypotonia, hypotonus |
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| (noun) (of a solution) the extent to which a solution has a lower osmotic pressure than some other | - |
| hypotonus | (noun) (of muscular tissue) the state of being hypotonic | Synonyms: hypotonia, hypotonicity |
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| hypotyposis | (noun) vivid picturesque description. | - |
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| hypovitaminosis | (noun) any of several diseases caused by deficiency of one or more vitamins | Synonyms: avitaminosis |
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| hypovolaemia | (noun) a blood disorder consisting of a decrease in the volume of circulating blood | Synonyms: hypovolemia |
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| hypovolemia | (noun) a blood disorder consisting of a decrease in the volume of circulating blood | Synonyms: hypovolaemia |
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| hypoxia | (noun) oxygen deficiency causing a very strong drive to correct the deficiency | - |
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| hypozeugma | (noun) use of a series of subjects with a single predicate | - |
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| hypozeuxis | (noun) use of a series of parallel clauses (as in `I came, I saw, I conquered') | - |
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| hypsography | (noun) measurement of the elevation of land above sea level | Synonyms: hypsometry |
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| (noun) the scientific study of the earth's configuration above sea level (emphasizing the measurement of land altitudes relative to sea level) | - |
| hypsometer | (noun) an altimeter that uses the boiling point of water to determine land elevation | - |
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| hypsometry | (noun) measurement of the elevation of land above sea level | Synonyms: hypsography |
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| hyrax | (noun) any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes | Synonyms: coney, cony, das, dassie |
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| hyson | (noun) a Chinese green tea with twisted leaves | - |
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| hyssop | (noun) bitter leaves used sparingly in salads; dried flowers used in soups and tisanes | - |
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| (noun) a European mint with aromatic and pungent leaves used in perfumery and as a seasoning in cookery; often cultivated as a remedy for bruises; yields hyssop oil | Synonyms: Hyssopus officinalis |
| hysterectomy | (noun) surgical removal of the uterus | - |
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| hysteresis | (noun) the lagging of an effect behind its cause; especially the phenomenon in which the magnetic induction of a ferromagnetic material lags behind the changing magnetic field | - |
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| hysteria | (noun) excessive or uncontrollable fear | - |
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| (noun) neurotic disorder characterized by violent emotional outbreaks and disturbances of sensory and motor functions | Synonyms: hysterical neurosis |
| (noun) state of violent mental agitation | Synonyms: craze, delirium, frenzy, fury |
| hysteric | (noun) a person suffering from hysteria | - |
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| hysterics | (noun) an attack of hysteria | - |
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| hysterocatalepsy | (noun) hysteria with cataleptic symptoms | - |
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| hysterosalpingogram | (noun) X ray of the uterus and Fallopian tubes; usually done in diagnosing infertility (to see if there any blockages) | - |
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| hysteroscopy | (noun) visual examination of the uterus and uterine lining using an endoscope inserted through the vagina | - |
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| hysterotomy | (noun) surgical incision into the uterus (as in cesarean section) | - |
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| ichthyolatry | (noun) the worship of fish | Synonyms: fish-worship |
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| ichthyologist | (noun) a zoologist who studies fishes | - |
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| ichthyology | (noun) the branch of zoology that studies fishes | - |
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| ichthyosaur | (noun) any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs | - |
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| ichthyosaurus | (noun) ichthyosaurs of the Jurassic | - |
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| ichthyosis | (noun) any of several congenital diseases in which the skin is dry and scaly like a fish | - |
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| ichthyostega | (noun) early tetrapod amphibian found in Greenland | - |
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| iconography | (noun) the images and symbolic representations that are traditionally associated with a person or a subject | - |
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| ideography | (noun) the use of ideograms in writing | - |
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| idiopathy | (noun) any disease arising from internal dysfunctions of unknown cause | Synonyms: idiopathic disease, idiopathic disorder |
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| iodochlorhydroxyquin | (noun) drug used to treat certain fungal infection (as athlete's foot) | Synonyms: Clioquinol |
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| iodothyronine | (noun) thyronine with iodine added | - |
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| isomorphy | (noun) (biology) similarity or identity of form or shape or structure | Synonyms: isomorphism |
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| keratohyalin | (noun) hyaline in the large granules of the stratum granulosum | - |
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| lexicography | (noun) the act of writing dictionaries | - |
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| liothyronine | (noun) thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer | Synonyms: T, triiodothyronine |
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| lipochondrodystrophy | (noun) hereditary disease (autosomal recessive) consisting of an error is mucopolysaccharide metabolism; characterized by severe abnormalities in development of skeletal cartilage and bone and mental retardation | Synonyms: dysostosis multiplex, gargoylism, Hurler's disease, Hurler's syndrome |
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| lithography | (noun) the act of making a lithographic print | - |
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| (noun) a method of planographic printing from a metal or stone surface | - |
| lithophyte | (noun) plant that grows on rocks or stony soil and derives nourishment from the atmosphere | Synonyms: lithophytic plant |
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