WordNet (r) 3.0 (2006):

Robert Hooke
    n 1: English scientist who formulated the law of elasticity and
         proposed a wave theory of light and formulated a theory of
         planetary motion and proposed the inverse square law of
         gravitational attraction and discovered the cellular
         structure of cork and introduced the term `cell' into
         biology and invented a balance spring for watches
         (1635-1703) [syn: Hooke, Robert Hooke]