| via | Any passage in the body, as the intestine, the vagina, etc. Origin: L. Way, road (05 Mar 2000) |
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| viability | The quality or state of being viable. Specifically: The capacity of living after birth. The capacity of living, or being distributed, over wide geographical limits; as, the viability of a species. Source: Websters Dictionary (01 Mar 1998) |
| viability test | <investigation> Test to determine the proportion of living individuals, cells or organisms, in a sample. Viability tests are most commonly performed on cultured cells and usually depend on the ability of living cells to exclude a dye, (an exclusion test) or to specifically take it up (inclusion test). (18 Nov 1997) |
| viable | Alive, able to reproduce. (09 Oct 1997) |
| viable cell count | Number of cells in a given area or volume that are thriving. (05 Mar 2000) |
| viable count | Measurement of the concentration of live cells in a microbial population. (09 Oct 1997) |
| viaduct | A structure of considerable magnitude, usually with arches or supported on trestles, for carrying a road, as a railroad, high above the ground or water; a bridge; especially, one for crossing a valley or a gorge. Origin: L. Via a way + -duct, as in aqueduct: cf. F. Viaduc. Source: Websters Dictionary (01 Mar 1998) |
| vial | <equipment> A small bottle. Origin: Gr. Phial (18 Nov 1997) |
| viand | An article of food; provisions; food; victuals; used chiefly in the plural. "Viands of various kinds allure the taste." (Pope) Origin: F. Viande meat, food, LL. Vianda, vivanda, vivenda, properly, things to live on, fr. L. Vivere to live; akin to vivus living. See Vivid, and cf. Victualis. Source: Websters Dictionary (01 Mar 1998) |
| viaticum | 1. An allowance for traveling expenses made to those who were sent into the provinces to exercise any office or perform any service. 2. Provisions for a journey. 3. The communion, or eucharist, when given to persons in danger of death. Origin: L, from viaticus, a. See Viatic. Source: Websters Dictionary (01 Mar 1998) |