| ATD | Alzheimer-type dementia; androstatrienedione; anthropomorphic test dummy; antithyroid drug; aqueous ... |
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| RCT | radiotherapy and chemotherapy; randomized clinical trial; randomized controlled trial; registered ca... |
| CBC | capillary blood gases; carbenicillin; child behavior characteristics; complete blood cell count |
| CBG | capillary blood gases; coronary bypass graft; corticosteroid-binding globulin; cortisol-binding glob... |
| CPG | capillary blood gases; cardiopneumographic recording; carotid phonoangiogram |
| STT | Schirmer Tear Test |
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| TBUT | Tear break-up time |
| tear gases | Gases that irritate the eyes, throat, or skin. Severe lacrimation develops upon irritation of the eyes. (12 Dec 1998) |
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| blood gases | A clinical expression for the determination of the partial pressures of oxygen and carbon dioxide in blood. (05 Mar 2000) |
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| gases | The vapor state of matter; nonelastic fluids in which the molecules are in free movement and their mean positions far apart. Gases tend to expand indefinitely, to diffuse and mix readily with other gases, to have definite relations of volume, temperature, and pressure, and to condense or liquefy at low temperatures or under sufficient pressure. (12 Dec 1998) |
| greenhouse gases | Gases that trap the heat of the sun in the Earth's atmosphere, producing the greenhouse effect. The two major greenhouse gases are water vapour and carbon dioxide. Other greenhouse gases include methane, ozone, chlorofluorocarbons, and nitrous oxide. (05 Dec 1998) |
| combustion gases | The gases released from a combustion process. (05 Dec 1998) |
| noble gases | Gases which are members of the zero group of the periodic system. These gases generally do not react chemically. (12 Dec 1998) |
| inert gases | Gases which are members of the zero group of the periodic system. These gases generally do not react chemically. (12 Dec 1998) |
| blocked tear duct | A blocked nasolacrimal duct which normally carries tears from the eyes to the nose. Commonly seen in infants, but usually resolves spontaneously by age 2-3. In adults blockage can occur from chronic sinusitis or trauma. A gentle massage of the lacrimal gland 2-3 times a day for several months may reopen the tear duct. (27 Sep 1997) |
| bucket-handle tear | A tear in the central part of a semilunar cartilage. (05 Mar 2000) |
| mallory-weiss tear | Lacerations in the oesophageal mucosa that occur close to ot at the junction of the oesophagus and the stomach. Mallory-Weiss tears occur as the result of forceful vomiting or coughing. Symptoms include vomiting blood. (27 Sep 1997) |
| wear-and-tear pigment | Lipofuscin that accumulates in aging or atrophic cells as a residue of lysosomal digestion. (05 Mar 2000) |
| tear | 1. To separate by violence; to pull apart by force; to rend; to lacerate; as, to tear cloth; to tear a garment; to tear the skin or flesh. "Tear him to pieces; he's a conspirator." (Shak) 2. Hence, to divide by violent measures; to disrupt; to rend; as, a party or government torn by factions. 3. To rend away; to force away; to remove by force; to sunder; as, a child torn from its home. "The hand of fate Hath torn thee from me." (Addison) 4. To pull with violence; as, to tear the hair. 5. To move violently; to agitate. "Once I loved torn ocean's roar." To tear a cat, to rant violently; to rave; especially applied to theatrical ranting. To tear down, to demolish violently; to pull or pluck down. To tear off, to pull off by violence; to strip. To tear out, to pull or draw out by violence; as, to tear out the eyes. To tear up, to rip up; to remove from a fixed state by violence; as, to tear up a floor; to tear up the foundation of government or order. Origin: OE. Teren, AS. Teran; akin to OS. Farterian to destroy, D. Teren to consume, G. Zerren to pull, to tear, zehren to consume, Icel. Taera, Goth. Gatairan to destroy, Lith. Dirti to flay, Russ. Drate to pull, to tear, Gr. To flay, Skr. Dar to burst. 63. Cf. Darn, Epidermis, Tarre, Tirade. 1. <physiology> A drop of the limpid, saline fluid secreted, normally in small amount, by the lachrymal gland, and diffused between the eye and the eyelids to moisten the parts and facilitate their motion. Ordinarily the secretion passes through the lachrymal duct into the nose, but when it is increased by emotion or other causes, it overflows the lids. "And yet for thee ne wept she never a tear." (Chaucer) 2. Something in the form of a transparent drop of fluid matter; also, a solid, transparent, tear-shaped drop, as of some balsams or resins. "Let Araby extol her happy coast, Her fragrant flowers, her trees with precious tears." (Dryden) 3. That which causes or accompanies tears; a lament; a dirge. "Some melodous tear." Tear is sometimes used in the formation of self-explaining compounds; as, tear-distilling, tear-drop, tear-filled, tear-stained, and the like. Origin: AS. Tear; akin to G. Zarhe, OHG. Zahar, OFries. & Icel. Tar, Sw. Tar, Dan. Taare, Goth. Tagr, OIr. Der, W. Dagr, OW. Dacr, L. Lacrima, lacruma, for older dacruma, Gr, . 59. Cf. Lachrymose. Source: Websters Dictionary (01 Mar 1998) |
| tear drop fracture | <radiology> Avulsion of anterioinferior corner of cervical vertebral body by anterior ligament, most severe and unstable injury of the cervical spine, often the result of diving into shallow water, may be secondary to hyperflexion or hyperextension, typically at C2 see: cervical spine fractures (12 Dec 1998) |
| tear film | A protective film, 7 to 9 nm thick, consisting of external oily, intermediate watery, and deep mucoprotein layers. Synonym: tear film. (05 Mar 2000) |
| tear gas | A gas, such as acetone, benzene bromide, and xylol, that causes irritation of the conjunctiva and profuse lacrimation. See: lacrimator. (05 Mar 2000) |
| tear sac | The upper portion of the nasolacrimal duct into which empty the two lacrimal canaliculi; empty. Synonym: saccus lacrimalis, dacryocyst, sacculus lacrimalis, tear sac. (05 Mar 2000) |
Synonyms : Tear Gas, Gas, Tear, Gases, Tear
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