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)
Idiom of the Day
next of kin
one's closest living relative or relatives
The police notified the dead woman's next of kin after the accident.