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

tentorial herniation
transtentorial herniation.

tentorial nerve
a nerve, sometimes called the tentorial branch of the ophthalmic nerve instead, that arises from the ophthalmic nerve close to its origin from the trigeminal ganglion, turning back to innervate the dura mater of the tentorium cerebelli and falx cerebri; modality, general sensory.

tentorial notch
an opening at the anterior part of the cerebellum, formed by the internal border of the tentorium and the dorsum of the sella turcica, and occupied mainly by the mesencephalon.

tentorial sinus
straight sinus.

tentorium
(ten-tor´e-әm) Latin word meaning tent. In anatomy, it is used for a part resembling a tent or covering. adj., tento´rial., adj. tentorium cerebelli , tentorium of cerebellum the process of the dura mater supporting the occipital lobes and covering the cere...

Tenuate
(ten´u-āt) trademark for preparations of diethylpropion hydrochloride, an appetite suppressant.

ter in die
(ter in de´a) Latin phrase meaning three times a day. Used in prescription writing.

teras
(ter´as) a significantly malformed fetus. adj., terat´ic., adj.

teratism
(ter´ә-tiz-әm) an anomaly of formation or development; see developmental anomaly.

teratoblastoma
(ter″ә-to-blas-to´mә) teratoma.

teratocarcinoma
(ter″ә-to-kahr″sĭ-no´mә) a malignant neoplasm consisting of elements of teratoma with those of embryonal carcinoma or choriocarcinoma,, or both; it is usually found in the testis.

teratogen
(ter´ә-to-jәn) any agent or factor that induces or increases the incidence of abnormal prenatal development; called also developmental toxicant. adj., teratogen´ic., adj.

teratogenesis
(ter″ә-to-jen´ә-sis) the production of deformity in the developing embryo; called also teratogeny. adj., teratogenet´ic., adj.

teratogenous
(ter″ә-toj´ә-nәs) developed from fetal remains.

teratogeny
(ter″ә-toj´ә-ne) teratogenesis.

teratoid
(ter´ә-toid) resembling a teras.

teratoid tumor
teratoma.

teratology
(ter″ә-tol´ә-je) that division of embryology and pathology dealing with abnormal development and congenital deformations. See also developmental toxicology. adj., teratolog´ic., adj.

teratoma
(ter″ә-to´mә) a type of germ cell tumor made up of a number of different types of tissue from one or more of the germ cell layers; it is usually found in the ovary or testis and may be either benign or malignant. malignant teratoma a solid, malignant ovarian tumor resemb...

teratomatous
(ter″ә-to´mә-tәs) pertaining to or of the nature of teratoma.

teratosis
(ter″ә-to´sis) teratism.

terazosin
(tәr-a´zo-sin) an alpha1-adrenergic blocking agent used as the hydrochloride salt in treatment of hypertension and benign prostatic hyperplasia, administered orally.

terbinafine
(ter´bin-ah-fēn″) a synthetic antifungal agent used as the hydrochloride salt topically and orally in treatment of tinea and of fungal infections of the nails.

terbium
(Tb) (ter´be-әm) a chemical element, atomic number 65, atomic weight 158.924.

terbutaline
(tәr-bu´tә-lēn) a beta2-adrenergic receptor agonist used as a bronchodilator; it has also been used as a tocolytic agent.

terconazole
(tәr-kon´ә-zōl) an imidazole derivative used as a topical antifungal agent in treatment of vulvovaginal candidiasis.

terebration
(ter″ә-bra´shәn) an act of boring or trephining; also, a boring pain.

teres
(te´rēz) Latin word meaning round. In anatomy, it is used to describe a long, rounded structure, for example, ligamentum teres (round ligament).

teres major muscle
origin, inferior angle of scapula; insertion, lip of intertubercular sulcus of humerus; innervation, lower subscapular nerve; action, adducts, extends, rotates arm medially.

teres minor muscle
origin, lateral margin of scapula; insertion, greater tubercle of humerus; innervation, axillary nerve; action, rotates arm laterally.

term
(turm) a definite period, especially the period of gestation, or pregnancy.

term infant
one born at a gestational age of 37 to 42 completed weeks (259 to 293 completed days).

Terman test
Stanford-Binet test.

terminal artery
end artery. an artery that does not divide into branches but is directly continuous with capillaries.

terminal duct carcinoma
a slow-growing, locally invasive, malignant tumor composed of myoepithelial and ductal elements, usually in the minor salivary glands.

terminal hair
the coarse hair on various areas of the body during adult years.

terminal hinge position
centric relation.

terminal lamina of hypothalamus
the thin plate derived from the telencephalon, forming the anterior wall of the third ventricle of the cerebrum.

terminal line
one on the inner surface of each pelvic bone, from the sacroiliac joint to the iliopubic eminence anteriorly, separating the false from the true pelvis.

terminal nerve
the collection of nerve filaments found in the pia mater between the olfactory bulb and the crista galli, and passing through the cribriform plate to the nasal mucosa.

terminal nucleus
terminator nucleus any of the groups of nerve cells within the central nervous system upon which the axons of primary afferent neurons of various cranial nerves synapse.

terminal pneumonia
pneumonia developing during some other disease and hastening a fatal termination.

terminal respiratory unit
the functional unit of the lung, including a respiratory bronchiole, alveolar ducts and sacs, and alveoli; called also primary lobule of lung.

terminal sterilization
the final sterilization of instruments and equipment after use, making them safe for handling.

terminatio
(tur″mĭ-na´she-o) Latin word meaning an ending; a term used in anatomy.

Terminologia Anatomica
(TA) (tur″mĭ-no-lo´je-ә an″ә-tom´ĭ-kә) International Anatomical Terminology: the official body of anatomical nomenclature created jointly by the Federative International Committee on Anatomical Terminology and the 56 Member Associations of the International ...

terminology
(tur″mĭ-nol´ә-je) the vocabulary of an art or science. the science that deals with the investigation, arrangement, and construction of terms. International Anatomical Terminology Terminologia Anatomica.

terminus
(tur´mĭ-nәs) pl. ter´mini Latin word meaning an ending; a term used in anatomy.

ternary
(tur´nә-re) third in order. made up of three elements or radicals.

terpene
(tur´pēn) any hydrocarbon of the formula C10H16.

Terramycin
(ter″ә-mi´sin) trademark for preparations of oxytetracycline, a broad-spectrum antibiotic.

terror
(ter´әr) an attack of extreme fear or dread. night terrors , sleep terrors pavor nocturnus.

Terry syndrome
(ter´e) retinopathy of prematurity.

Terson syndrome
(ter-saw´) hemorrhage into the vitreous.

tertian
(tur´shәn) recurring in 3-day cycles (every second day); applied to the type of fever caused by certain forms of malarial parasites; see also malaria.

tertian fever
a fever that occurs every third day, such as tertian malaria.

tertiary care
the level of care in a health care system consisting of complex procedures given in a health care center that has highly trained specialists and often advanced technology.

tertiary syphilis
The third and final stage of syphilis; its symptoms may develop soon after the secondary symptoms have gone or they may lie hidden for many years. This type is less contagious to other people but is extremely dangerous to the person who has it; it may be fatal, particularly if the central nervous system or heart is affect...

tertigravida
(tәr-tĭ-grav´ĭ-dә) a woman pregnant for the third time; gravida III.

tertipara
(tәr-tip´ә-rә) a woman who has had three pregnancies that resulted in viable offspring; para III. Called also tripara.

Tes-Tape
(tes´tāp) trademark for glucose oxidase reagent strip test used for the semiquantitative determination of glucose in urine.

tesla
(T) (tes´lә) the SI unit of magnetic flux density, a vector quantity that measures the magnitude of a magnetic field. It is equal to 1 weber per square meter.

tessellated
(tes´ә-lāt″әd) divided into squares, like a checker board.

test
(test) an examination or trial. a significant chemical reaction. reagent.

test tube
a tube of thin glass, closed at one end; used in chemical tests and other laboratory procedures.

test type
(test tīp) printed letters of varying size, used in the testing of visual acuity.

testalgia
(tes-tal´jә) orchialgia.

testectomy
(tәs-tek´tә-me) orchiectomy.

testes
(tes´tēz) plural of testis.

testicle
(tes´tĭ-kәl) testis.

testicular
(tes-tik´u-lәr) pertaining to the testis.

testicular artery
origin, abdominal aorta; branches, ureteral, epididymal; distribution, ureter, epididymis, testis.

testicular compression reflex
Kocher reflex.

testicular feminization syndrome
complete androgen resistance.

testicular tumor
any tumor of the testes; in adults these are almost always malignant germinomas, whereas in children many are yolk sac tumors or benign varieties such as teratomas or androblastomas.

testing
(test´ing) administration of one or more tests. compatibility testing for a potential blood transfusion, the testing beforehand to determine compatibility between the recipient's serum and the donor's red blood cells, to ensure that the transfused product will survive in and bene...

testis
(tes´tis) the male gonad; either of the paired, egg-shaped glands normally found in the scrotum. The testes produce the spermatozoa (the male reproductive cells) and testosterone (the male sex hormone), which is responsible for the secondary sex characters of the male. See also castration. Called also testicle.

testitis
(tes-ti´tis) orchitis.

testoid
(tes´toid) resembling a testis. a term applied to testicular hormones and other natural or synthetic compounds having a similar effect.

testosterone
(tes-tos´tә-rōn) the primary male sex hormone (androgen) that is produced by Leydig cells of the testes in response to luteinizing hormone secreted by the pituitary gland. It is also produced by the adrenal cortex in both males and females. Its chief function is to stimulate development of the male reproductive org...

tetanic
(tә-tan´ik) pertaining to tetanus.

tetanic contraction
tonic contraction physiological tetanus.

tetanic spasm
tonic spasm physiological tetanus.

tetaniform
(tә-tan´ĭ-form) tetanoid.

tetanization
(tet″ә-nĭ-za´shәn) the act of tetanizing a muscle.

tetanize
(tet´ә-nīz) to stimulate a muscle at progressively higher frequencies until successive contractions fuse and cannot be distinguished from one another.

tetanoid
(tet´ә-noid) resembling tetanus or tetany; called also tetaniform.

tetanolysin
(tet″ә-nol´ĭ-sin) the hemolytic fraction of the exotoxin formed by Clostridium tetani, the causative organism of tetanus.

tetanospasmin
(tet″ә-no-spaz´min) the neurotoxic component of the tetanus toxin, which causes the muscle spasms of tetanus.

tetanus
(tet´ә-nәs) physiological tetanus. a highly fatal disease caused by the bacillus Clostridium tetani, characterized by muscle spasms and convulsions. The bacilli are common in rural areas, especially in soil and dust, and are spread by animal and human feces. They grow in the intestines of human...

tetanus immune globulin
a specific immune globulin derived from the blood plasma of human donors who have been immunized with tetanus toxoid; used in the prophylaxis and treatment of tetanus.

tetanus neonatorum
(tet´ә-nәs ne″o-na-tor´әm) neonatal tetanus.

tetanus toxin
the potent exotoxin produced by Clostridium tetani, consisting of two components, one a neurotoxin called tetanospasmin and the other a hemolysin called tetanolysin.

tetany
(tet´ә-ne) a syndrome manifested by carpopedal spasm (sharp flexion of the wrist and ankle joints) with muscle twitchings, cramps, convulsions, and sometimes attacks of stridor. It is due to abnormal calcium metabolism, such as in persons with decreased functioning of the parathyroid glands, vitamin D deficiency, or alk...

tetany of newborn
neonatal tetany.

tetartanopia
(tet″әr-tә-no´pe-ә) a very rare type of dichromatic vision in which there is perception of red and green only, with blue and yellow perceived as an achromatic (gray) band. Some authorities doubt its existence. adj., tetartanop´ic, adj. . quadrantanopia.

tetartanopsia
(tet″әr-tә-nop´se-ә) tetartanopia.

tethered cord syndrome
see tethered cord.

tetrabrachius
(tet″rә-bra´ke-әs) a double fetus having four upper limbs.

tetracaine
(tet´rә-kān) a local, topical, and spinal anesthetic, used as the base or the hydrochloride salt.