| MRO | master reference oscillator; medical review officer; minimal recognizable odor; muscle receptor orga... |
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| MSOF | multiple systems organ failure |
| NOS | network operating system; nitric oxide synthetase; non-organ-specific; not on staff; not otherwise s... |
| OAR | organ at risk |
| OBF | organ blood flow |
| tactile organ | Any one of the sensory end organs. Synonym: organum tactus, tactile organ. (05 Mar 2000) |
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| target organ | A tissue or organ upon which a hormone exerts its action; generally, a tissue or organ with appropriate receptors for a hormone. Synonym: target. (05 Mar 2000) |
| eco-organ | <ecology> An ecological feature which mirrors environmental conditions. A type of vegetation based on such a feature. (11 Oct 1998) |
| electric organ | In about 250 species of electric fishes, modified muscle fibres forming disklike multinucleate plates arranged in stacks like batteries in series and embedded in a gelatinous matrix. A large torpedo ray may have half a million plates. Muscles in different parts of the body may be modified, i.e., the trunk and tail in the electric eel, the hyobranchial apparatus in the electric ray, and extrinsic eye muscles in the stargazers. Powerful electric organs emit pulses in brief bursts several times a second. They serve to stun prey and ward off predators. A large torpedo ray can produce of shock of more than 200 volts, capable of stunning a human. (storer et al., general zoology, 6th ed, p672) (12 Dec 1998) |
| total end-diastolic diameter | Cross sectional diameter of the left ventricle including the septum and posterior wall thicknesses in diastole. (05 Mar 2000) |
| total end-systolic diameter | Cross sectional diameter of the left ventricle including the septum and posterior wall thicknesses in systole. (05 Mar 2000) |
| enamel organ | Epithelial cells surrounding the dental papilla and differentiated into three layers: the inner enamel epithelium, consisting of ameloblasts which eventually form the enamel, and the enamel pulp and external enamel epithelium, both of which atrophy and disappear before and upon eruption of the tooth, respectively. (12 Dec 1998) |
| end | 1. The extreme or last point or part of any material thing considered lengthwise (the extremity of breadth being side); hence, extremity, in general; the concluding part; termination; close; limit; as, the end of a field, line, pole, road; the end of a year, of a discourse; put an end to pain; opposed to beginning, when used of anything having a first part. "Better is the end of a thing than the beginning thereof." (Eccl. Vii. 8) 2. Point beyond which no procession can be made; conclusion; issue; result, whether successful or otherwise; conclusive event; consequence. "My guilt be on my head, and there an end." (Shak) "O that a man might know The end of this day's business ere it come!" (Shak) 3. Termination of being; death; destruction; extermination; also, cause of death or destruction. "Unblamed through life, lamented in thy end." (Pope) "Confound your hidden falsehood, and award either of you to be the other's end." (Shak) "I shall see an end of him." (Shak) 4. The object aimed at in any effort considered as the close and effect of exertion; ppurpose; intention; aim; as, to labour for private or public ends. "Losing her, the end of living lose." (Dryden) "When every man is his own end, all things will come to a bad end." (Coleridge) 5. That which is left; a remnant; a fragment; a scrap; as, odds and ends. "I clothe my naked villainy With old odd ends stolen out of holy writ, And seem a saint, when most I play the devil." (Shak) 6. One of the yarns of the worsted warp in a Brussels carpet. An end. On end; upright; erect; endways. To the end; continuously. <anatomy> End bulb, one of the two plates of a jewel in a timepiece; the part that limits the pivot's end play. Ends of the earth, the remotest regions of the earth. In the end, finally. On end, upright; erect. To the end, in order. To make both ends meet, to live within one's income. To put an end to, to destroy. Origin: OE. & AS. Ende; akin to OS. Endi, D. Einde, eind, OHG. Enti, G. Ende, Icel. Endir, endi, Sw. Ande, Dan. Ende, Goth. Andeis, Skr. Anta. Cf. Ante-, Anti-, Answer. Source: Websters Dictionary (01 Mar 1998) |
| end artery | <anatomy, artery> An artery with insufficient anastomoses to maintain viability of the tissue supplied if occlusion of the artery occurs. Synonym: terminal artery. (05 Mar 2000) |
| end-brush | An anomalous term that refers to the terminal arborization of an axon. Synonym: end-brush. Origin: G. Telos, end, + dendron, tree (05 Mar 2000) |
| end bud | The rapidly proliferating mass of cells at the caudal extremity of the embryo; remnant of the primitive node. Synonym: end bud. (05 Mar 2000) |
| end bulb | One of the oval or rounded bodies in which the sensory nerve fibres terminate in mucous membrane. (05 Mar 2000) |
| end cell | A fully differentiated cell, the mature cell of a lineage. (05 Mar 2000) |
| end-cutting bur | A bur with blades only on its end. (05 Mar 2000) |
| end-diastolic | 1. Occurring at the end of diastole, immediately before the next systole, as in end-diastolic pressure. 2. Interrupting the final moments of diastole, barely premature, as in end-diastolic extrasystole. (05 Mar 2000) |