Search Result for "laurasia": 
Wordnet 3.0

NOUN (1)

1. a hypothetical continent that (according to plate tectonic theory) broke up later into North America and Europe and Asia; 



WordNet (r) 3.0 (2006):

Laurasia
    n 1: a hypothetical continent that (according to plate tectonic
         theory) broke up later into North America and Europe and
         Asia