A pictorial query language.["A Query Manipulation System for Image Data Retrieval",T. Ichikawa et al, Proc IEEE Workshop Picture Data Descriptionand Management, Aug 1980, pp. 61-67].
A term invented hy Paracelsus to designate the principle on which depends the form of mercury, sulphur, and salt. These the alchymists regarded as the three bodies that give birth to every other.
