The Collaborative International Dictionary of English v.0.48:

Viz \Viz\, adv. [Contr. fr. videlicet.]
   To wit; that is; namely.
   [1913 Webster]

The Free On-line Dictionary of Computing (30 December 2018):

viz

   A visual language for specification and programming.

   ["viz: A Visual Language Based on Functions", C.M. Holt, 1990
   IEEE Workshop on Visual Langs, Oct 1990, pp.221-226].

   (1995-02-23)