| atelectasis | <chest medicine, radiology> A term used to describe partial or complete collapse of the lung, usually due to an obstruction of a bronchus (with mucus plug, infection or cancer). Atelectasis is commonly seen immediately in the post-operative period in those who have undergone general anaesthesia. Symptoms of atelectasis include low-grade fever, dry cough, chest pains and mild shortness of breath. Mild post-operative atelectasis is treated with deep breathing exercises and respiratory therapy. Atelectasis secondary to carcinoma will often be managed using bronchoscopy. (27 Sep 1997) |
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| atelectatic | Relating to atelectasis. (05 Mar 2000) |
| atelectatic rale | Transitory light crackling sound that disappears after deep breathing or coughing. (05 Mar 2000) |
| ateles | <zoology> A genus of American monkeys with prehensile tails, and having the thumb wanting or rudimentary. See Spider monkey, and Coaita. Origin: Gr. Incomplete; priv. + completion. Source: Websters Dictionary (01 Mar 1998) |
| atelia | Incomplete development of the body or any of its parts, as in infantilism and dwarfism. Synonym: atelia. Origin: G. Ateles, incomplete, + -osis, condition (05 Mar 2000) |
| ateliosis | Incomplete development of the body or any of its parts, as in infantilism and dwarfism. Synonym: atelia. Origin: G. Ateles, incomplete, + -osis, condition (05 Mar 2000) |
| ateliotic | Marked by ateliosis. (05 Mar 2000) |
| ateliotic dwarfism | A state in which the secretion of all anterior pituitary hormones is inadequate or absent; caused by a variety of disorders that result in destruction or loss of function of all or most of the anterior pituitary gland. Rare forms of PHP are inherited as autosomal recessive or as an X-linked recessive. Synonym: ateliotic dwarfism, hypophyseal cachexia, hypophysial cachexia. (05 Mar 2000) |
| atelopidtoxin | A potent poison from the skin of the golden arrow frog (Atelopus zeteki) of Central and South America. (05 Mar 2000) |
| atenolol | <chemical> 4-(2-hydroxy-3-((1-methylethyl)amino)propoxy)benzeneacetamide. A cardioselective beta-adrenergic blocker possessing properties and potency similar to propranolol, but without a negative inotropic effect. Pharmacological action: adrenergic beta-antagonists, anti-arrhythmia agents, antihypertensive agents, sympatholytics. Chemical name: Benzeneacetamide, 4-(2-hydroxy-3-((1-methylethyl)amino)propoxy)- (12 Dec 1998) |
| athalamous | <botany> Not furnished with shields or beds for the spores, as the thallus of certain lichens. Origin: Gr. Priv. + nuptial bed. Source: Websters Dictionary (01 Mar 1998) |
| athanor | A digesting furnace, formerly used by alchemists. It was so constructed as to maintain uniform and durable heat. Origin: F, fr. Ar. At-tannur, fr. Heb. Tannur an oven or furnace. Source: Websters Dictionary (01 Mar 1998) |
| athecata | <zoology> A division of Hydroidea in which the zooids are naked, or not inclosed in a capsule. See Tubularian. Origin: NL, fr. Gr. Priv. + chest, box. Source: Websters Dictionary (01 Mar 1998) |
| athelia | Congenital absence of the nipples. Origin: G. A-priv. + thele, nipple (05 Mar 2000) |
| athenaeum | Origin: L. Athenaemum, Gr. A temple of Minerva at Athens, fr, contr. Fr, in Homer, Athene (called Minerva by the Romans), the tutelary goddess of Athens. 1 A temple of Athene, at Athens, in which scholars and poets were accustomed to read their works and instruct students. 2. A school founded at Rome by Hadrian. 3. A literary or scientific association or club. 4. A building or an apartment where a library, periodicals, and newspapers are kept for use. Source: Websters Dictionary (01 Mar 1998) |