VIS n.
vitæ, or Vis vitalis Etym: [L.] (Physiol.), vital force. -- Vis viva Etym: [L.] (Mech.), living force; the force of a body moving against resistance, or doing work, in distinction from vis mortua, or dead force; the kinetic energy of a moving body; the capacity of a moving body to do work by reason of its being in mot…
VIVIPAROUS a.
Producing young in a living state, as most mammals, or as those plants the offspring of which are produced alive, either by bulbs instead of seeds, or by the seeds themselves germinating on the plant, instead of falling, as they usually do; -- opposed to oviparous. Viviparous fish. (Zoöl.) See Embiotocoid. -- Viviparo…