| ridge resorption | A loss in the volume and size of the alveolar portion of the mandible or maxilla. (05 Mar 2000) |
|---|---|
| ridgel | <zoology> Same as Ridgelling. Source: Websters Dictionary (01 Mar 1998) |
| ridgeling | <zoology> A half-castrated male animal. Origin: Prov. E. Riggilt, riggot, ananimal half castrated, a sheep having only one testicle; cf. Prov. G. Rigel, rig, a barrow hog, rigler a cock half castrated. Source: Websters Dictionary (01 Mar 1998) |
| ridiculous | 1. Fitted to excite ridicule; absurd and laughable; unworthy of serious consideration; as, a ridiculous dress or behavior. "Agricola, discerning that those little targets and unwieldy glaives ill pointed would soon become ridiculous against the thrust and close, commanded three Batavian cohorts . . . To draw up and come to handy strokes." (Milton) 2. Involving or expressing ridicule. "[It] provokes me to ridiculous smiling." (Shak) Synonym: Ludicrous, laughable, risible, droll, comical, absurd, preposterous. See Ludicrous. - Ridic"ulously, Ridic"ulousness. Origin: L. Ridiculosus, ridiculus, fr. Ridere to laigh. Cf. Risible. Source: Websters Dictionary (01 Mar 1998) |
| riding embolism | Embolism occurring at the bifurcation of an artery and blocking more or less completely both branches. Synonym: riding embolism. (05 Mar 2000) |
| Ridley's circle | Dural venous formation which surrounds the hypophysis, composed of right and left cavernous sinuses and the intercavernous sinuses. Synonym: circulus venosus ridleyi, Ridley's circle. A venous sinus at the periphery of the placenta. Synonym: sinus venosus sclerae. (05 Mar 2000) |
| Ridley's sinus | The anterior and posterior anastomoses between the cavernous sinus's, passing anterior and posterior to the hypophysis and forming, with the cavernous sinuses, the circular sinus. Synonym: sinus intercavernosi, Ridley's sinus. Jugular sinus Sinus jugularis, one of three enlargements of the jugular veins; the external jugular sinus is between the two sets of valves; the internal jugular sinus's are at the origin (superior bulb) and near the termination (inferior bulb). (05 Mar 2000) |
| Ridley, Humphrey | <person> English anatomist, 1653-1708. See: Ridley's circle, Ridley's sinus, circulus venosus ridleyi. (05 Mar 2000) |
| Ridell operation |
obliteration of the frontal sinus by removal of the anterior wall and floor and sometimes posterior walls of the sinus; for treatment of malignant tumors.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
|
|---|---|
| ridge |
A ridge is a geological feature that features a continuous elevational crest for some distance. Ridges are usually termed hills or mountains as well, depending on size. There are several main types of ridges: *Dendritic ridge: In a typical plateau terrain, the stream drainage valleys will leave intervening ridges. These are by far the most common ridges. ...
출처: en.wikipedia.org/wiki/Ridge
|
| ridge |
A narrow roughened elevation on a bone's surface.
출처: www.modernhumanorigins.com/r.html
|
| ridge |
an elongated area of relatively high pressure extending from the centre of a high-pressure region; the opposite of a trough.
출처: members.tripod.com/~MitchellBrown/almanac/weather_...
|
| ridge |
Sharp-edged elevation of shell surface occurring as a single line.
출처: www.fish.washington.edu/naturemapping/mollusks/glo...
|
| Rid | separate with a riddle, as grain from chaff |
|---|---|
| Rid | a canon in which the entrances of successive parts were indicated by cryptic symbols and devices (popular in the 15th and 16th centuries) |
| Rid | (often followed by `with') damaged throughout by numerous perforations or holes |
| Rid | spread throughout |
| Rid | a journey in a vehicle driven by someone else |
| Rid | a mechanical device that you ride for amusement or excitement |
| Rid | harass with persistent criticism or carping |
| Rid | copulate with, as of animals |
| Rid | keep partially engaged by slightly depressing a pedal with the foot |
| Rid | move like a floating object |
| Rid | ride over, along, or through |
| Rid | be carried or travel on or in a vehicle |