The Collaborative International Dictionary of English v.0.48:

Coulomb \Cou`lomb"\ (k??`l?n"), n. [From Coulomb, a French
   physicist and electrican.] (Physics)
   The standard unit of quantity in electrical measurements. It
   is the quantity of electricity conveyed in one second by the
   current produced by an electro-motive force of one volt
   acting in a circuit having a resistance of one ohm, or the
   quantity transferred by one amp[`e]re in one second. Formerly
   called weber.
   [1913 Webster]

WordNet (r) 3.0 (2006):

coulomb
    n 1: a unit of electrical charge equal to the amount of charge
         transferred by a current of 1 ampere in 1 second [syn:
         coulomb, C, ampere-second]
    2: French physicist famous for his discoveries in the field of
       electricity and magnetism; formulated Coulomb's Law
       (1736-1806) [syn: Coulomb, Charles Augustin de Coulomb]