| magnification empty | <microscopy> Magnification beyond which no new information is revealed. (05 Aug 1998) |
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| empty | 1. Containing nothing; not holding or having anything within; void of contents or appropriate contents; not filled; said of an inclosure, as a box, room, house, etc.; as, an empty chest, room, purse, or pitcher; an empty stomach; empty shackles. 2. Free; clear; devoid; often with of. "That fair female troop . . . Empty of all good." "I shall find you empty of that fault." (Shak) 3. Having nothing to carry; unburdened. "An empty messenger." "When ye go ye shall not go empty." (Ex. Iii. 21) 4. Destitute of effect, sincerity, or sense; said of language; as, empty words, or threats. "Words are but empty thanks." (Cibber) 5. Unable to satisfy; unsatisfactory; hollow; vain; said of pleasure, the world, etc. "Pleas'd in the silent shade with empty praise." (Pope) 6. Producing nothing; unfruitful; said of a plant or tree; as, an empty vine. "Seven empty ears blasted with the east wind." (Gen. Xli. 27) 7. Destitute of, or lacking, sense, knowledge, or courtesy; as, empty brains; an empty coxcomb. "That in civility thou seem'st so empty." (Shak) 8. Destitute of reality, or real existence; unsubstantial; as, empty dreams. Empty is used as the first element in a compound; as, empty-handed, having nothing in the hands, destitute; empty-headed, having few ideas; empty-hearted, destitute of feeling. Synonym: See Vacant. Origin: AS. Emtig, aemtig, aemetig, fr. Aemta, aemetta, quiet, leisure, rest; of uncertain origin; cf. G. Emsig busy. Source: Websters Dictionary (01 Mar 1998) |
| empty sella | A sella turcica, often enlarged, that contains no discernible pituitary gland; may be primarily due to an incompetent sellar diaphragm with compression of the pituitary gland by herniating arachnoid or secondarily due to surgery or radiotherapy. (05 Mar 2000) |
| empty sella syndrome | <radiology> Aetiology, idiopathic, most commonly reported in middle-aged obese women (associated with DM, hypertension, normal pituitary function), secondary, pituitary adenoma, surgery or irradiation, communicating hydrocephalus, familial (very rare) X-ray findings: sella normal or increased, intrasellar herniation of subarachnoid space, symptoms: headache, visual disorders, with or without decreased pituitary function, cerebrospinal fluid rhinorrhoea (12 Dec 1998) |
| Ambu bag | Proprietary name for a self-reinflating bag with nonrebreathing valves to provide positive pressure ventilation during resuscitation with oxygen or air. (05 Mar 2000) |
| bag | 1. To swell or hang down like a full bag; as, the skin bags from containing morbid matter. 2. To swell with arrogance. 3. To become pregnant. 1. A sack or pouch, used for holding anything; as, a bag of meal or of money. 2. A sac, or dependent gland, in animal bodies, containing some fluid or other substance; as, the bag of poison in the mouth of some serpents; the bag of a cow. 3. A sort of silken purse formerly tied about men's hair behind, by way of ornament. 4. The quantity of game bagged. 5. A certain quantity of a commodity, such as it is customary to carry to market in a sack; as, a bag of pepper or hops; a bag of coffee. Bag and baggage, all that belongs to one. To give one the bag, to disappoint him. Origin: OE. Bagge; cf. Icel. Baggi, and also OF. Bague, bundle, LL. Baga. Source: Websters Dictionary (01 Mar 1998) |
| bag cell neurons | <cell biology> Cluster of electrically coupled neurons in the abdominal ganglion of Aplysia that are homogeneous, easily dissected out and release peptides that stimulate egg laying. (18 Nov 1997) |
| bag-gel implant | An implant composed of a silicone rubber bag containing a silicone gel; used in augmentation mammaplasty. (05 Mar 2000) |
| bag net | A bag-shaped net for catching fish. Source: Websters Dictionary (01 Mar 1998) |
| bag of waters | The amniotic sac and amniotic fluid. (12 Dec 1998) |
| breathing bag | A collapsible reservoir from which gases are inhaled and into which gases may be exhaled during general anaesthesia or artificial ventilation. Synonym: reservoir bag. (05 Mar 2000) |
| reservoir bag | A collapsible reservoir from which gases are inhaled and into which gases may be exhaled during general anaesthesia or artificial ventilation. Synonym: reservoir bag. (05 Mar 2000) |
| Petersen's bag | An obsolete device consisting of a rubber bag introduced into the rectum and inflated to push up the bladder to facilitate suprapubic cystotomy. (05 Mar 2000) |
| colostomy bag | <surgery> A bag worn over an artifical anus to collect faeces. (05 Mar 2000) |
| Politzer bag | A pear-shaped rubber bag used for forcing air through the eustachian tube by the Politzer method. (05 Mar 2000) |