| GEF | gastroesophageal fundoplication; glossoepiglottic fold; gonadotropin enhancing factor |
|---|---|
| JF | joint fluid; jugular foramen; junctional fold |
| CEEA | curved end-to-end anastomosis [stapler] |
| EDCS | end-diastolic chamber stiffness; end-diastolic circumferential stress |
| EDL | end-diastolic length; end-diastolic load; estimated date of labor; extensor digitorum longus |
| four-strand crossing over | Crossing over with both strands of DNA from each sister chromatid, so that both strands from one chromatid are exchanged for both strands on the other. This is different from the usual case where only one of the two DNA strands on one sister chromatid is exchanged for the one matching strand (of the two strands) on the other sister chromatid. (09 Oct 1997) |
|---|---|
| alternate cover test | A test to detect phoria or strabismus; attention is directed to a small fixation object, and one eye is covered for several seconds; then the cover is moved quickly to the other eye; if the eye moves when it is uncovered, a strabismus or phoria is present. (05 Mar 2000) |
| areal cover | <botany, ecology> A measure of dominance that defines the degree to which above ground portions of plants cover the ground surface, it is possible for the total areal cover for all strata combined in a community or for single stratum to exceed 100 percent because: most plant communities consist of two or more vegetative strata. Areal cover is estimated by vegetative layer, and foliage within a single layer may overlap. (09 Oct 1997) |
| vegetative fish cover | <ecology> Vegetation materials, such as algal mats and organic debris, capable of providing protection for fish and other aquatic organisms. (06 Mar 2000) |
| cover | Anything that provides protection from predators or ameliorates adverse conditions of streamflow and/or seasonal changes in metabolic costs. May be instream cover, turbulence, and/or overhead cover, and may be for the purpose of escape, feeding, hiding, or resting. (09 Oct 1997) |
| cover class | A category into which plant species would fit based upon their percent areal cover, the cover classes used (midpoints in parentheses) are T = <1% cover (0), 1 = 1-5% (3.0), 2 = 6-15% (10.5), 7 = 51-75% (63.0), 6 = 76-95% (85.5), 7 = 96-100% (98.0). (09 Oct 1997) |
| cover glass | A thin glass disk or plate covering an object examined under the microscope. Synonym: coverslip. (05 Mar 2000) |
| cover test | A test used for objective demonstration of ocular deviation in strabismus; may be performed by two methods: the cover-uncover test and the alternate cover test. (05 Mar 2000) |
| cover-uncover test | A test to detect strabismus; the patient's attention is directed to a small fixation object, one eye is covered and after a few seconds, uncovered; if the uncovered eye moves to see the picture, strabismus is present. (05 Mar 2000) |
| prism cover test | Measurement of the deviation in strabismus by the alternate cover test combined with neutralization for the deviation using prisms. (05 Mar 2000) |
| shaded riverine aquatic cover | Near-shore aquatic area occurring at the interface between a stream and adjacent woody habitat. (09 Oct 1997) |
| instream cover | Areas of shelter in a stream channel that provide aquatic organisms protection from predators or competitors and/or a place in which to rest and conserve energy due to a reduction in the force of the current. (09 Oct 1997) |
| overhead cover | Material (organic or inorganic) that provides protection to fish or other aquatic animals from above, generally includes material overhanging the stream less than a particular distance above the water surface. Values less than 0.5 m (1.5 feet) and less than 1 m (3 feet) have been used. (09 Oct 1997) |
| thermal cover | Vegetative condition, generally with greater than 70% canopy closure and 40 feet in height, that can significantly ameliorate weather effects such as wind, heat, cold, and snow. Used by wildlife in winter. (05 Dec 1998) |
| acromial end of clavicle | The flattened lateral end of the clavicle that articulates with the acromion and is anchored to the coracoid process by the conoid and trapezoid ligaments. Synonym: extremitas acromialis claviculae, acromial end of clavicle. (05 Mar 2000) |