| Oscillatoria princeps | Large cyanobacterium that exhibits gliding movements, possibly involving the activity of helically arranged cytoplasmic fibrils of 6-9nm diameter. (18 Nov 1997) |
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| oscillatory | Moving, or characterised by motion, backward and forward like a pendulum; swinging; oscillating; vibratory; as, oscillatory motion. Origin: Cf. F. Oscillatoire. See Oscillate. Source: Websters Dictionary (01 Mar 1998) |
| oscillatory potential | The variable voltage in the positive deflection of the electroretinogram (B-wave) of the dark-adapted eye arising from amacrine cells. (05 Mar 2000) |
| oscillograph | An instrument that records oscillations, usually electrical. (05 Mar 2000) |
| oscillography | The study of the records made by an oscillograph. (05 Mar 2000) |
| oscillometer | An apparatus for measuring oscillations of any kind, especially those of the bloodstream in sphygmometry. See: sphygmo-oscillometer. Origin: L. Oscillo, to swing, + G. Metron, measure (05 Mar 2000) |
| oscillometric | Relating to the oscillometer or the records made by its use. (05 Mar 2000) |
| oscillometry | Measurement of oscillations of any kind. In medicine it is used in studying cardiovascular and respiratory physiology. (12 Dec 1998) |
| oscillopsia | The subjective sensation of oscillation of objects viewed. Synonym: oscillating vision. Origin: L. Oscillo, to swing, + G. Opsis, vision (05 Mar 2000) |
| oscilloscope | <instrument> An oscillograph in which the record of oscillations is continuously visible. Cathode ray oscilloscope (CRO), the common form of oscilloscope, in which a varying electrical signal (y) vertically deflects an electron beam impinging on a fluorescent screen, while some other function (x or time) deflects the beam horizontally; the result is a visual graph of y plotted against x or time with negligible distortion by inertia. Storage oscilloscope, a cathode ray oscilloscope in which the visual record of oscillations persists on the fluorescent screen until erased electrically. (05 Mar 2000) |
| oscine | <ornithology> Singing birds; a group of the Passeres, having numerous syringeal muscles, conferring musical ability. Origin: L. Oscen, -inis. Source: Websters Dictionary (01 Mar 1998) |
| oscinian | 1. <ornithology> One of the Oscines, or singing birds. 2. <zoology> Any one of numerous species of dipterous files of the family Oscinidae. Some, whose larvae live in the stalks, are very destructive to barley, wheat, and rye; others, as the barley fly (Oscinis frit), destroy the heads of grain. Source: Websters Dictionary (01 Mar 1998) |
| oscinine | <zoology> Of or pertaining to the Oscines. Source: Websters Dictionary (01 Mar 1998) |
| oscitate | To yawn; to gape. Origin: L. Oscito, fr. Os, mouth, + cieo, to put in motion (05 Mar 2000) |
| oscitation | Synonym: yawning. Origin: L. Oscitatio (05 Mar 2000) |