The Collaborative International Dictionary of English v.0.48:

Videlicet \Vi*del"i*cet\, adv. [L., contr. fr. videre licet,
   literally, it is easy to see, one may or can see.]
   To wit; namely; -- often abbreviated to viz.
   [1913 Webster]

WordNet (r) 3.0 (2006):

videlicet
    adv 1: as follows [syn: namely, viz., that is to say, to
           wit, videlicet]