WordNet (r) 3.0 (2006):
Peirce n 1: United States mathematician and astronomer remembered for his studies of Uranus and Saturn and Neptune (1809-1880) [syn: Peirce, Benjamin Peirce] 2: United States philosopher and logician; pioneer of pragmatism (1839-1914) [syn: Peirce, Charles Peirce, Charles Sanders Peirce]