Toxicology Glossary - V
vacuole: Membrane-bound cavity within a cellvalidity (of a measurement): Expression of the degree to which a measurement measures what it purports to measure
NT concurrent validity, construct validity, content validity, criterion validity, predictive validity.
Last, 1988
validity of a study: Degree to which the inferences drawn from a study, especially generalizations extending beyond the study sample, are warranted when account is taken of the study methods, the representativeness of the study sample, and the nature of the population from which it is drawn
Last, 1988
NT external validity, internal validity
vasoconstriction: Decrease of the calibre of the blood vessels leading to a decreased blood flow
AN vasodilation
vasodilation: Increase in the calibre of the blood vessels, leading to an increased blood flow
AN vasoconstriction
vehicle: Substance(s) used to formulate active ingredients for administration or use (general term for solvents, suspending agents, etc.)
Brown, 1988
RT excipient
venom: Animal toxin generally used for self-defence or predation and usually delivered by a bite or sting
PS toxin
ventilation:
- Process of supplying a building or room with fresh air
- Process of exchange of air between the ambient atmosphere and the lungs
- In physiology, the amount of air inhaled per day
- Oxygenation of blood
ventricular fibrillation: Irregular heartbeat characterized by uncoordinated contractions of the ventricle
vermicide: Substance intended to kill worms
vermifuge: Substance that causes the expulsion of intestinal worms
vertigo: Dizziness; an illusion of movement as if the external world were revolving around an individual or as if the individual were revolving in space
vesicant:
- adj., Producing blisters on the skin.
- n., Substance that causes blisters on the skin
vesicle:
- Small sac or bladder containing fluid
- Blisterlike elevation on the skin containing serous fluid
RT plasma