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

hematotoxic
(he´mә-to-) ( hem´ә-to-tok″sik) pertaining to blood poisoning. poisonous to the blood and hematopoietic system.

hematotrachelos
(he″mә-to-) (hem″ә-to-trә-ke´lәs) distention of the cervix uteri with blood.

hematotropic
(he″mә-to-) ( hem″ә-to-tro´pik) having a special affinity for or exerting a specific effect on the blood or blood cells.

hematotympanum
(he″mә-to-) (hem″ә-to-tim´pә-nәm) hemorrhage into the middle ear.

hematoxylin
(he″mә-tok´sĭ-lin) an acid coloring matter obtained from the wood of a tree (Haematoxylon campechianum); used as a stain for histologic specimens and as an indicator.

hematoxylin body
a dense, homogeneous particle, easily stainable with hematoxylin, consisting of nuclear material derived from an injured cell together with a small amount of cytoplasm. Hematoxylin bodies occur in systemic lupus erythematosus. Lymphocytes that ingest such particles are known as LE cells. Called also LE body.

hematoxylin-eosin stain
a mixture of hematoxylin in distilled water and aqueous eosin solution, widely used for routine examination of tissues.

hematuria
(he″mә-) (hem″ә-tu´re-ә) the discharge of blood in the urine, making the urine either slightly blood-tinged, grossly bloody, or a smoky brown color. Microscopic examination of a urine specimen can reveal red blood cells not evident to the naked eye; however, this microscopi...

heme
(hēm) the nonprotein, insoluble, iron protoporphyrin constituent of hemoglobin, of various other respiratory pigments, and of many cells, both animal and vegetable. It is an iron compound and constitutes the pigment portion or protein-free part of the hemoglobin molecule, and is responsible for its oxygen-car...

hemeralopia
(hem″әr-ә-lo´pe-ә) defective vision in a bright light; called also day blindness and night sight.

hemiacardius
(hem″e-ә-kahr´de-әs) an unequal twin in which the heart is rudimentary, its circulation being assisted by the other twin.

hemiachromatopsia
(hem″e-ә-kro″mә-top´se-ә) loss of the normal perception of color in half, or in corresponding halves, of the visual field.

hemiamyosthenia
(hem″e-ә-mi″os-the´ne-ә) lack of muscular power on one side of the body.

hemianacusia
(hem″e-an″ә-ku´zhә) hearing loss in one ear.

hemianalgesia
(hem″e-an″әl-je´ze-ә) analgesia on one side of the body.

hemianencephaly
(hem″e-an″әn-sef´ә-le) congenital absence of one side of the brain.

hemianesthesia
(hem″e-an″es-the´zhә) anesthesia of one side of the body. crossed hemianesthesia , hemianesthesia cruciata loss of sensation on one side of the body and loss of pain and temperature sense on the opposite side.

hemianopia
(hem″e-ә-no´pe-ә) defective vision or blindness in half of the visual field; usually applied to bilateral defects caused by a single lesion. adj., hemianop´ic, hemianop´tic., adj. homonymous hemianopia hemianopia affecting the right halves or the left halves of ...

hemianopic
(hem″e-ә-nop´ik) pertaining to or characterized by hemianopia.

hemianopic pupillary reaction
in certain cases of hemianopia, light thrown upon one side of the retina causes the iris to contract, while light thrown upon the other side arouses no response.

hemianopic scotoma
depressed or lost vision affecting half of the central visual field; see also hemianopia.

hemianopsia
(hem″e-ә-nop´se-ә) hemianopia.

hemianosmia
(hem″e-ә-noz´me-ә) absence of the sense of smell in one nostril.

hemiapraxia
(hem″e-ә-prak´se-ә) inability to perform coordinated movements on one side of the body.

hemiataxia
(hem″e-ә-tak´se-ә) ataxia on one side of the body.

hemiathetosis
(hem″e-ath″ә-to´sis) athetosis of one side of the body.

hemiatrophy
(hem″e-at´ro-fe) atrophy of one side of the body or one half of an organ or part.

hemiaxial
(hem″e-ak´se-әl) at any oblique angle to the long axis of the body or a part.

hemiazygos vein
a venous trunk that intercepts the lower left posterior intercostal veins; it arises from the ascending lumbar vein, passes up on the left side of the vertebrae to the eighth thoracic vertebra, where it may receive the accessory branch, and crosses over the vertebral column to open into the azygos vein.

hemiballism
(hem″e-bal´iz-әm) hemiballismus.

hemiballismus
(hem″e-bә-liz´mәs) violent motor restlessness of half of the body, most marked in the upper limbs.

hemibladder
(hem´e-blad″әr) a half bladder, as seen in exstrophy of the cloaca; the urinary bladder is formed as two physically separated parts, each with its own ureter.

hemiblock
(hem´e-blok) failure in conduction of electrical impulse in either of the two main divisions of the left branch of the bundle of his; a left anterior hemiblock is one in the anterior (superior) division and a left posterior hemiblock is one in the posterior (inferior) division. Hemiblock accompanied by an anterior wall myocar...

hemibody irradiation
external beam irradiation involving exposure of half the body.

hemic
(he´mik) (hem´ik) pertaining to blood; called also hemal and hematic.

hemic murmur
one due to an abnormality of the blood, such as the increased cardiac output of anemia; called also flow murmur.

hemicardia
(hem″e-kahr´de-ә) the presence of only one side of a four-chambered heart.

hemicellulose
(hem″e-sel´u-lōs) a food fiber composed of various sugars, including xylose, glucose, and mannose. Hemicelluloses absorb and retain water in the gut but have little effect on stool size, and are largely digested by gastrointestinal bacteria.

hemicephalia
(hem″e-sә-fa´le-ә) congenital absence of the cerebrum.

hemicephalus
(hem″e-sef´ә-lәs) a fetus exhibiting hemicephalia.

hemichorea
(hem″e-kә-re´ә) chorea affecting only one side of the body.

hemicolectomy
(hem″e-ko-lek´tә-me) excision of approximately half of the colon.

hemicorticectomy
(hem″e-kor″tĭ-sek´tә-me) surgical removal of a cerebral hemisphere leaving the basal ganglia intact; done in intractable epilepsy.

hemicrania
(hem″e-kra´ne-ә) headache on one side of the head. a developmental anomaly consisting of absence of half of the cranium.

hemicraniosis
(hem″e-kra″ne-o´sis) hyperostosis of one side of the cranium and face.

hemidiaphragm
(hem″e-di´ә-fram) one half of the diaphragm.

hemidysesthesia
(hem″e-dis″es-the´zhә) a disorder of sensation affecting only one side of the body.

hemidystrophy
(hem″e-dis´trә-fe) unequal development of the two sides of the body.

hemiectromelia
(hem″e-ek-tro-me´le-ә) a developmental anomaly consisting of imperfect limbs on one side of the body.

hemiepilepsy
(hem″e-ep´ĭ-lep-se) epilepsy affecting one side of the body.

hemifacial
(hem″e-fa´shәl) affecting one side of the face.

hemifacial atrophy
facial hemiatrophy.

hemigastrectomy
(hem″e-gas-trek´tә-me) excision of half of the stomach.

hemigeusia
(hem″e-goo´zhә) absence of the sense of taste on one side of the tongue.

hemiglossectomy
(hem″e-glos-ek´tә-me) excision of half of the tongue.

hemiglossitis
(hem″e-glos-i´tis) inflammation of half of the tongue.

hemignathia
(hem″e-na´the-ә) a developmental anomaly characterized by partial or complete lack of the lower jaw on one side.

hemihidrosis
(hem″e-hĭ-dro´sis) sweating on one side of the body only.

hemihypalgesia
(hem″e-hi″pәl-je´ze-ә) diminished sensitivity to pain on one side of the body.

hemihyperesthesia
(hem″e-hi″pәr-es-the´zhә) increased sensitivity of one side of the body.

hemihyperhidrosis
(hem″e-hi″pәr-hĭ-dro´sis) excessive sweating on one side of the body.

hemihyperplasia
(hem″e-hi″pәr-pla´zhә) overdevelopment of one side of the body or of half of an organ or part.

hemihypertonia
(hem″e-hi″pәr-to´ne-ә) increased muscle tone on one side of the body.

hemihypertrophy
(hem″e-hi-pur´trә-fe) overgrowth of one side of the body or of a part.

hemihypesthesia
(hem″e-hi″pes-the´zhә) diminished sensitivity on one side of the body.

hemihypoplasia
(hem″e-hi″po-pla´zhә) underdevelopment of one side of the body or of half of an organ or part.

hemihypotonia
(hem″e-hi″po-to´ne-ә) diminished muscle tone on one side of the body.

hemilaminectomy
(hem″e-lam″ĭ-nek´tә-me) removal of a vertebral lamina on one side only.

hemilaryngectomy
(hem″e-lar″in-jek´tә-me) excision of one lateral half of the larynx.

hemilateral
(hem″e-lat´әr-әl) affecting one side of the body only.

hemilingual atrophy
atrophy of one side of the tongue.

hemimelia
(hem″e-me´le-ә) congenital absence of all or part of the distal half of a limb.

hemimelus
(hem-im´ә-lәs) an individual exhibiting hemimelia.

hemin
(he´min) a porphyrin chelate of iron, derived from red blood cells; the chloride of heme. It is used to treat the symptoms of various porphyrias. hematin (def. 1).

heminephrectomy
(hem″e-nә-frek´tә-me) excision of part (half) of a kidney.

hemiopia
(hem″e-o´pe-ә) hemianopia.

hemipagus
(hem-ip´ә-gәs) twin fetuses joined laterally at the thorax.

hemiparalysis
(hem″e-pә-ral´ә-sis) paralysis of one side of the body.

hemiparaplegia
(hem″e-par″ә-ple´jә) paralysis of the lower half of one side.

hemiparesis
(hem″e-pә-re´sis) paresis (paralysis) affecting one side of the body.

hemiparesthesia
(hem″e-par″es-the´zhә) paresthesia (abnormal sensations) on one side.

hemiparetic
(hem″e-pә-ret´ik) pertaining to hemiparesis. one affected with hemiparesis.

hemiplegia
(hem″e-ple´jә) paralysis of one side of the body; usually caused by a brain lesion, such as a tumor, or by stroke syndrome. The paralysis occurs on the side opposite the brain disorder, because motor axons from the cerebral cortex travel in two bands called the pyramidal tracts, and most of the fibers cross ...

hemiplegic gait
a gait involving flexion of the hip because of footdrop and circumduction of the leg.

Hemiptera
(he-mip´tәr-ә) the true bugs, an order of arthropods (class Insecta) with over 30,000 species, usually characterized by the presence of two pairs of wings and mouth parts adapted for piercing or sucking.

hemirachischisis
(hem″e-rә-kis´kĭ-sis) fissure of the vertebral column without prolapse of the spinal cord.

hemisacralization
(hem″e-sa″krәl-ĭ-za´shәn) fusion of the fifth lumbar vertebra to the first segment of the sacrum on only one side.

hemisection
(hem″e-sek´shәn) division into two equal parts. surgical removal of one root of a large mandibular molar along with the corresponding crown area.

hemisectomy
(hem″e-sek´tә-me) amputation of one root of a two-rooted mandibular tooth. See also apicoectomy.

hemispasm
(hem´e-spaz″әm) spasm affecting only one side.

hemisphere
(hem´ĭ-sfēr) half of a spherical or roughly spherical structure or organ. cerebral hemisphere one of the paired structures constituting the largest part of the brain, which together comprise the extensive cerebral cortex, centrum semiovale, basal ganglia, and rhinenceph...

hemispherectomy
(hem″ĭ-sfēr-ek´tә-me) surgical removal of a cerebral hemisphere; done in intractable epilepsy.

hemispherium
(hem″ĭ-sfēr´e-әm) pl. hemisphe´ria Latin word meaning hemisphere; a term used in anatomy.

hemithorax
(hem″e-thor´aks) one side of the chest; the cavity lateral to the mediastinum.

hemithyroidectomy
(hem″e-thi″roid-ek´tә-me) excision of one lobe of the thyroid.

hemivertebra
(hem″e-vur´tә-brә) a developmental anomaly in which one side of a vertebra is incompletely developed. Hemivertebra.

hemizygosity
(hem″e-zi-gos´ĭ-te) the state of having only one of a pair of alleles transmitting a specific character; the term refers particularly to the state of the male for X-linked genes. adj., hemizy´gous., adj.

hemizygote
(hem″e-zi´gōt) an individual exhibiting hemizygosity, such as males with the X chromosome.

hemoaccess
(he″mo-ak´sәs) vascular access.

hemobilia
(he″mo-bil´e-ә) bleeding into the biliary passages.