Copy of `Dorland's Medical Dictionary`

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Dorland's Medical Dictionary Category: Health and Medicine > Medical Dictionary Date & country: 31/12/2010, USA Words: 39128

hydrophobic
(hi″dro-fo´bik) repelling water; insoluble in water; not readily absorbing water. rabid.

hydrophobic contact lens
hard contact lens.

hydrophthalmos
(hi″drof-thal´mos) a type of glaucoma characterized by enlargement and distention of the fibrous coats of the eyeball. congenital glaucoma.

hydrophthalmus
(hi″drof-thal´mәs) hydrophthalmos. congenital glaucoma.

hydrophysometra
(hi″dro-fi″so-me´trә) collection of fluid and gas in the uterus.

hydropic degeneration
a form in which the epithelial cells absorb much water.

hydropneumatosis
(hi″dro-noo″mә-to´sis) collection of fluid and gas in the tissues.

hydropneumopericardium
(hi″dro-noo″mo-per″ĭ-kahr´de-әm) fluid and gas in the pericardium; called also pneumohydropericardium.

hydropneumothorax
(hi″dro-noo″mo-thor´aks) a collection of fluid and gas within the pleural cavity; called also pneumohydrothorax.

Hydropres
(hi´dro-pres) trademark for a preparation of hydrochlorothiazide and reserpine, an antihypertensive agent.

hydrops
(hi´drops) old term for edema. adj., hydrop´ic, adj. . fetal hydrops , hydrops fetalis gross edema of the entire body of the newborn infant, in erythroblastosis fetalis.

hydropyonephrosis
(hi″dro-pi″o-nә-fro´sis) urine and pus in the renal pelvis.

hydroquinone
(hi″dro-kwĭ-nōn´) a topical agent used to bleach hyperpigmented skin.

hydrorrhea
(hi″dro-re´ә) a copious watery discharge. hydrorrhea gravidarum watery discharge from the gravid uterus.

hydrosalpinx
(hi″dro-sal´pinks) accumulation of watery fluid in a fallopian tube.

hydrosol
(hi´dro-sol) a colloid in which the dispersion medium is a liquid.

hydrostatic
(hi″dro-stat´ik) pertaining to a liquid in a state of equilibrium or the pressure exerted by a stationary fluid.

hydrostatic pressure
the pressure at any level in fluid at rest due solely to the weight of the fluid above it.

hydrostatic test
floating of the lungs of a dead infant when placed in water indicates that the child was born alive; called also Raygat test.

hydrostatics
(hi″dro-stat´iks) the science of equilibrium of fluids.

hydrosyringomyelia
(hi″dro-sĭ-ring″go-mi-e´le-ә) syringomyelia.

hydrotaxis
(hi″dro-tak´sis) taxis of motile organisms or cells in response to the influence of water or moisture.

hydrotherapy
(hi″dro-ther´ә-pe) the external use of water in treatment of disease and injury. Water has important physical properties related to heat conduction, buoyancy, and cleansing action; thus it is an ideal agent for applications of heat and cold to obtain desired physiological effects, for débridement of wounds t...

hydrothermal
(hi-dro-thur´mәl) pertaining to the temperature effects of water, as in hot baths.

hydrothermic
(hi″dro-thur´mik) hydrothermal.

hydrothionemia
(hi″dro-thi″o-ne´me-ә) hydrogen sulfide in the blood.

hydrothionuria
(hi″dro-thi″o-nu´re-ә) hydrogen sulfide in the urine. the presence of hydrogen sulfide in the urine after an individual has inhaled this toxic gas.

hydrothorax
(hi″dro-thor´aks) a pleural effusion containing serous fluid.

hydrotropism
(hi-drot´ro-piz-әm) tropism in response to the presence of water or moisture.

hydrotubation
(hi″dro-too-ba´shәn) introduction of saline solution into the fallopian tube; saline solution containing dye is used in determining patency of the tube, and saline solution containing hydrocortisone followed by chymotrypsin is used in maintaining patency after salpingostomy.

hydroureter
(hi″dro-u-re´tәr) distention of the ureter with fluid, due to obstruction.

hydrous
(hi´drәs) containing water.

hydrovarium
(hi″dro-var´e-әm) a collection of serous fluid in an ovary.

hydroxide
(hi-drok´sīd) the OH− anion or a compound containing the OH− ion.

hydroxocobalamin
(hi-drok″so-ko-bal´ә-min) an analogue of cyanocobalamin (vitamin B12) having exceptionally long-acting hematopoietic activity; used in the treatment of pernicious anemia and other macrocytic anemias.

hydroxyamphetamine
(hi-drok″se-am-fet´ә-mēn) an adrenergic used as a nasal decongestant, pressor, and mydriatic.

hydroxyapatite
(hi-drok″se-ap´ә-tīt) an inorganic constituent of bone matrix and teeth, imparting rigidity to these structures.

hydroxyapatite crystal
microscopic crystals of hydroxyapatite occurring in joints or bursae in a variety of connective tissue disorders.

hydroxychloroquine
(hi-drok″sĭ-klor´o-kwin) an antiinflammatory and antiprotozoal agent, used as the sulfate salt in treatment of malaria, lupus erythematosus, and rheumatoid arthritis.

hydroxyl
(hi-drok´sәl) the univalent radical OH.

hydroxylase
(hi-drok´sә-lās) any enzyme that brings about the coupled oxidation of two donors, with incorporation of oxygen into one of them.

hydroxylysine
(hi-drok″se-li´sēn) a naturally occurring amino acid.

hydroxyprogesterone
(hi-drok″se-pro-jes´tәr-ōn) 17α-hydroxyprogesterone; an intermediate formed in the conversion of cholesterol to cortisol, androgens, and estrogens. a synthetic preparation of the caproate ester, used in treatment of dysfunctional uterine bleeding and menstrual cycle abnormalities, and in th...

hydroxyprolinemia
(hi-drok″se-pro″lĭ-ne´me-ә) an autosomal recessive aminoacidopathy characterized by an excess of free hydroxyproline in the plasma and urine, due to a defect in the enzyme hydroxyproline oxidase.

hydroxypropyl cellulose
(hi-drok″se-pro´pәl sel´u-lōs) a water-soluble derivative of cellulose, used as an pharmaceutic aid and also applied topically to the conjunctiva to protect and lubricate the cornea in the treatment of dry eye.

hydroxypropyl methylcellulose
(hi-drok″se-pro´pәl meth″әl-sel´u-lōs) hypromellose.

hydroxyurea
(hi-drok″se-u-re´ә) an antineoplastic agent that blocks the conversion of ribonucleotides to deoxyribonucleotides, thus stopping DNA synthesis; used in the treatment of melanoma, resistant chronic myelocytic leukemia, and recurrent, metastatic, or inoperable ovarian carcinoma. It is also used in sickle...

hydroxyzine
(hi-drok´sә-zēn) a compound chemically related to piperazine, used as hydroxyzine hydrochloride or hydroxyzine pamoate as an antianxiety agent and antiemetic, in urticaria and other manifestations of allergic dermatoses, and as an adjunct to preoperative and postoperative medications. Administered orally or i...

hydruria
(hi-droo´re-ә) excessive dilution of the urine, so that it has a low osmolality or specific gravity. See also hypo-osmolality.

hygiene
(hi´jēn) the science of health and its preservation. adj., hygien´ic., adj. dental hygiene oral hygiene. the profession practiced by a dental hygienist. oral hygiene the personal maintenance of cleanliness and hygiene of the t...

hygienist
(hi-jen´ist) (hi-je´nist) a specialist in hygiene. dental hygienist a dental health specialist whose primary concern is nonsurgical periodontal therapy, maintenance of dental health, and prevention of oral disease. He or she also does patient education in proper brushing ...

hygroma
(hi-gro´mә) pl. hygromas, hygro´mata an accumulation of fluid in a sac, cyst, or bursa. adj., hygrom´atous., adj. cystic hygroma , hygroma cysticum an endothelium-lined, fluid-containing lesion of lymphatic origin, encountered most often in infants and child...

hygrometer
(hi-grom´ә-tәr) an instrument for measuring atmospheric moisture.

hygroscopic
(hi″gro-skop´ik) readily absorbing moisture.

Hygroton
(hi´gro-ton) trademark for a preparation of chlorthalidone, a diuretic.

hymen
(hi´mәn) the membranous fold partly or completely closing the vaginal orifice. adj., hy´menal, adj. .

hymenal caruncles
small elevations of mucous membrane around the vaginal opening, being relics of the ruptured hymen; called also myrtiform caruncles.

hymenectomy
(hi″mәn-ek´tә-me) excision of the hymen.

hymenitis
(hi″mәn-i´tis) inflammation of the hymen.

hymenolepiasis
(hi″mә-no-lep-i´ә-sis) infection due to tapeworms of the genus Hymenolepis.

Hymenolepis
(hi″mә-nol´ә-pis) a genus of tapeworms. H. diminu´ta, H. lanceola´ta, and H. na´na have been found in humans.

hymenotomy
(hi″mәn-ot´ә-me) incision of the hymen.

hyoepiglottidean
(hi″o-ep″ĭ-glŏ-tid´e-әn) pertaining to the hyoid bone and epiglottis.

hyoglossal
(hi″o-glos´әl) pertaining to the hyoid bone and tongue or to the hyoglossal muscle.

hyoglossal membrane
a fibrous lamina connecting the undersurface of the tongue with the hyoid bone.

hyoglossus muscle
hyoglossal muscle: origin, body and greater horn of hyoid bone; insertion, side of tongue; innervation, hypoglossal nerve; action, pushes down and pulls in tongue.

hyoid
(hi´oid) shaped like a U. pertaining to the hyoid bone.

hyoid bone
a horseshoe-shaped bone at the base of the tongue, just above the thyroid cartilage.

hyoscine
(hi´o-sēn) scopolamine.

hyoscyamine
(hi″o-si´ә-mēn) an anticholinergic and antimuscarinic alkaloid from plant species of the genus Hyoscyamus and others. It is the levorotatory component of atropine with actions similar to those of atropine but with more potent effects. Used primarily as a gastrointestinal or urinary tract antispasmodic a...

hypacusia
(hi″pә-ku´zhә) slightly diminished acuteness of the sense of hearing.

hypalgesia
(hi″pal-je´ze-ә) diminished sensibility to pain. adj., hypalge´sic., adj.

hypamnios
(hi-pam´ne-os) oligohydramnios.

hypanakinesia
(hi-pan″ә-kĭ-ne´zhә) hypokinesia.

hypaxial
(hi-pak´se-әl) beneath an axis, such as the second cervical vertebra.

hyper-β-alaninemia
(hi″pәr-ba″tә-al″ә-nĭ-ne´me-ә) a rare disorder of β-alanine metabolism; β-alanine and other molecules including taurine and γ-aminobutyric acid are accumulated and excreted at elevated levels and the disorder is characterized by lethargy, excessive sleepiness...

hyper-IgE syndrome
hyperimmunoglobulinemia E syndrome.

hyperabduction syndrome
a thoracic outlet syndrome due to compression of the brachial plexus trunk roots and axillary vessels by the pectoralis minor muscle and the coracoid process when the arms are stretched above the head, as during sleep. Called also Wright syndrome.

hyperabsorption
(hi″pәr-ab-sorp´shәn) increased intestinal absorption of a substance.

hyperacid
(hi″pәr-as´id) abnormally or excessively acid.

hyperacidity
(hi″pәr-ә-sid´ĭ-te) excessive acidity.

hyperactive child syndrome
former name for attention-deficit/hyperactivity disorder.

hyperactivity
(hi″pәr-ak-tiv´ĭ-te) abnormally increased muscular activity or function. former name for, and now a principal sign of, attention-deficit/hyperactivity disorder. adj. hyperac´tive., adj.

hyperacusia
(hi″pәr-ә-ku´zhә) hyperacusis.

hyperacusis
(hi″pәr-ә-koo´sis) abnormal acuteness of the sense of hearing.

hyperacute
(hi″pәr-ә-kūt´) extremely acute.

hyperadenosis
(hi″pәr-ad″ә-no´sis) enlargement of glands.

hyperadiposis
(hi″pәr-ad″ĭ-po´sis) extreme fatness.

hyperadrenalism
(hi″pәr-ә-dre´nәl-iz-әm) overactivity of the adrenal glands.

hyperadrenocorticism
(hi″pәr-ә-dre″no-kor´tĭ-siz-әm) hypersecretion of hormones by the adrenal cortex; see Cushing syndrome. Called also hyperadrenalism and hypercorticism.

hyperalbuminemia
(hi″pәr-al-bu″mĭ-ne´me-ә) excessive albumin in the blood.

hyperaldosteronemia
(hi″pәr-al-dos″tә-ro-ne´me-ә) excessive aldosterone in the blood.

hyperaldosteronism
(hi″pәr-al-dos´tә-ro-niz″әm) aldosteronism.

hyperaldosteronuria
(hi″pәr-al-dos″tә-ro-nu´re-ә) excessive aldosterone in the urine.

hyperalgesia
(hi″pәr-al-je´ze-ә) excessive sensitivity to pain. adj., hyperalge´sic., adj.

hyperalimentation
(hi″pәr-al″ĭ-men-ta´shәn) ingestion of excessive quantities; see also bulimia and binge eating. parenteral nutrition. Although this term is commonly used, it is technically incorrect, since parenteral nutrition does not involve an abnormally increased or excessive amount of fee...

hyperalkalinity
(hi″pәr-al″kә-lin´ĭ-te) excessive alkalinity.

hyperalphalipoproteinemia
(hi″pәr-al″fә-lip″o-pro″te-ne´me-ә) the presence of abnormally high levels of high-density lipoproteins (α-lipoproteins) in the serum.

hyperaminoacidemia
(hi″pәr-ә-me″no-as″ĭ-de´me-ә) aminoacidemia.

hyperaminoaciduria
(hi″pәr-ә-me″no-as″ĭ-du´re-ә) aminoaciduria.