| MO | macroorchidism; manually operated; Master of Obstetrics; Master of Osteopathy; medical officer; mesi... |
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| MO-MOM | mineral oil and milk of magnesia |
| OEF | oil immersion field; oxygen extraction fraction |
| OIF | observed intrinsic frequency; oil immersion field; Osteogenesis Imperfecta Foundation |
| ol | oliv olive oil [Lat. oleum olivea] |
| bird's-foot | <botany> A papilionaceous plant, the Ornithopus, having a curved, cylindrical pod tipped with a short, clawlike point. Bird's-foot trefoil. <botany> A genus of plants (Lotus) with clawlike pods. L. Corniculatas, with yellow flowers, is very common in Great Britain. The related plant, Trigonella ornithopodioides, is also European. Source: Websters Dictionary (01 Mar 1998) |
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| bird shot retinochoroiditis | Bilateral diffuse retinal vasculitis with depigmentation of multiple areas of the choroid and retinal pigment epithelium posterior to the ocular equator, often with an associated papillitis or optic atrophy; vitiligo occurs occasionally. (05 Mar 2000) |
| bird's-nest | 1. The nest in which a bird lays eggs and hatches her young. 2. The nest of a small swallow (Collocalia nidifica and several allied species), of China and the neighboring countries, which is mixed with soups. The nests are found in caverns and fissures of cliffs on rocky coasts, and are composed in part of algae. They are of the size of a goose egg, and in substance resemble isinglass. 3. <botany> An orchideous plant with matted roots, of the genus Neottia (N. Nidus-avis) Bird's-nest pudding, a pudding containing apples whose cores have been replaces by sugar. Yellow bird's nest, a plant, the Monotropa hypopitys. Source: Websters Dictionary (01 Mar 1998) |
| bird's nest filter | A wire mesh vena cava filter. (05 Mar 2000) |
| bird's nest ivc filter | <radiology> Introduced 1982; Cook Inc., Bloomington, IN advantages, low profile: 14.5 Fr introducer sheath, low recurrent PE rates (1.1 - 2.7% by clinical history), low IVC thrombosis rates (2.9 - 5.0% by clinical history), placement in large diameter IVCs (not greater than40mm), free-form configuration does not require centreing in IVC disadvantages: stainless steel: ferromagnetic = magnetic susceptibility artifact, more operator dependent, difficult to place in short IVCs (need about 7cm for proper placement), prolapse of filter wires (? clinical significance) see also: indications (12 Dec 1998) |
| Bird's sign | <clinical sign> The presence of a zone of dullness on percussion with absence of respiratory sign's in hydatid cyst of the lung. (05 Mar 2000) |
| bird's-tongue | <botany> The knotgrass (Polygonum aviculare). Source: Websters Dictionary (01 Mar 1998) |
| bird unit | A unit of prolactin activity: the minimal quantity of the hormone which will cause a certain increase in weight of the crop gland of pigeons. (05 Mar 2000) |
| bower bird | <zoology> An Australian bird (Ptilonorhynchus violaceus or holosericeus), allied to the starling, which constructs singular bowers or playhouses of twigs and decorates them with brightcoloured objects; the satin bird. The name is also applied to other related birds of the same region, having similar habits; as, the spotted bower bird (Chalmydodera maculata), and the regent bird (Sericulus melinus). Source: Websters Dictionary (01 Mar 1998) |
| galley-bird | <zoology> The European green woodpecker; also, the spotted woodpecker. Origin: Etymol. Uncertain. Source: Websters Dictionary (01 Mar 1998) |
| mallee bird | <zoology> [From native name. The leipoa. See Leipoa. Source: Websters Dictionary (01 Mar 1998) |
| peabody bird | <ornithology> An American sparrow (Zonotrichia albicollis) having a conspicuous white throat. The name is imitative of its note. Synonym: White-throated sparrow. (26 Mar 1998) |
| mino bird | <zoology> An Asiatic bird (Gracula musica), allied to the starlings. It is black, with a white spot on the wings, and a pair of flat yellow wattles on the head. It is often tamed and taught to pronounce words. Origin: Hind. Maina. Source: Websters Dictionary (01 Mar 1998) |
| water bird | <zoology> Any aquatic bird; a water fowl. Source: Websters Dictionary (01 Mar 1998) |
| weet-bird | <zoology> The wry neck; so called from its cry. Source: Websters Dictionary (01 Mar 1998) |