| aqueductus sylvii | An ependymal-lined canal in the mesencephalon about 20 mm long, connecting the third to the fourth ventricle. Synonym: aqueductus cerebri, aqueduct of cerebrum, aqueductus sylvii, iter a tertio ad quartum ventriculum, sylvian aqueduct. (05 Mar 2000) |
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| aqueductus vestibuli | aqueduct of vestibule |
| aquent | <ecology> Soils with an aquic or peraquic moisture regime and lacking distinct soil horizons in the subsoil, wet entisols. (09 Oct 1997) |
| aqueous | <chemistry> Watery, prepared with water. (18 Nov 1997) |
| aqueous chambers | The combined anterior and posterior chamber's of the eye containing the aqueous humor. See: anterior chamber of eye, posterior chamber of eye. See: anterior segment. (05 Mar 2000) |
| aqueous flare | Tyndall phenomenon observed in the fluid of the anterior chamber of the eye. (05 Mar 2000) |
| aqueous humor | <physiology> A transparent liquid contained in the anterior and posterior chambers of the eye, produced by the ciliary process it passes to the venous system via the canal of Schlemm. (27 Sep 1997) |
| aqueous influx phenomenon | The filling of the aqueous vein, which normally carries blood and aqueous, with aqueous, when the junction of the aqueous vein and the recipient vein is partially occluded. Synonym: Ascher's aqueous influx phenomenon. (05 Mar 2000) |
| aqueous phase | The water portion of a system consisting of two liquid phase's, one mainly water, the other a liquid immiscible with water (e.g., benzene, ether). (05 Mar 2000) |
| aqueous solution | <chemistry> A solution in which water is the dissolving medium or solvent. (09 Jan 1998) |
| aqueous vaccine | A vaccine having a liquid vehicle (e.g., physiological salt solution) as distinguished from an emulsion. (05 Mar 2000) |
| aqueous vein | <anatomy, vein> A tributary of the anterior ciliary vein which receives aqueous humor from the sinus venosus sclerae. (05 Mar 2000) |
| aquept | <ecology> Soils with an aquic moisture regime and showing some soil development in the B-horizon, wet inceptisols. (09 Oct 1997) |
| aquic moisture regime | <ecology> A moisture condition associated with a seasonal reducing environment that is virtually free of dissolved oxygen because the soil is saturated by ground water or by water of the capillary fringe as in soils in aquic suborders and aquic subgroups. (09 Oct 1997) |
| aquila | Origin: L, an eagle. 1. <ornithology> A genus of eagles. 2. <astronomy> A northern constellation southerly from Lyra and Cygnus and preceding the Dolphin; the Eagle. Aquila alba [L, white eagle], an alchemical name of calomel. Source: Websters Dictionary (01 Mar 1998) |