Wordnet 3.0
NOUN (1)
1. 
 United States astronomer (born in the Netherlands) who studied the solar system and suggested in 1951 that there is a belt of comet-like debris at the edge of the solar system (1905-1973); 
[syn: Kuiper, Gerard Kuiper, Gerard Peter Kuiper]
WordNet (r) 3.0 (2006):
Gerard Kuiper
    n 1: United States astronomer (born in the Netherlands) who
         studied the solar system and suggested in 1951 that there
         is a belt of comet-like debris at the edge of the solar
         system (1905-1973) [syn: Kuiper, Gerard Kuiper, Gerard
         Peter Kuiper]