Work done voluntarily.

(medicine) A medical-imaging modality, similar to traditional computed tomography imaging, which acquires data via a two-dimensional detector array and reconstructs the images directly into a volume representation of the patient.

(volcanology) Any of the natural phenomena and processes associated with the action of volcanos, geysers and fumaroles

(finance) A second-order measure of derivative price sensitivity, expressed as the rate of change of vega with respect to changes in the volatility of the underlying asset.

Alternative spelling of half volley

A species of vole, Myodes rutilus, former genus names Clethrionomys and Evotomys.

The pair of plates (made of different metals or other conductive materials), and separated by an electrolyte, which form a voltaic cell (in a battery, for example).

A flying fish of California (Cheilopogon pinnatibarbatus californicus). / A flying gurnard (Dactylopterus volitans).

(volcanology) A large volcano, with shallow-sloping sides and a flattened dome, formed of successive eruptions of free-flowing lava from fissure vents.

(electronics) a type of computer memory that can be written to repeatedly, but does not lose its value when the system is powered off, because it is battery backed