The Collaborative International Dictionary of English v.0.48:

Lycopersicon \Lycopersicon\, Lycopersicum \Lycopersicum\n.
   The genus including tomatoes.

   Syn: genus Lycopersicon, genus Lycopersicum.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Lycopersicum
    n 1: tomatoes [syn: Lycopersicon, genus Lycopersicon,
         Lycopersicum, genus Lycopersicum]