The Collaborative International Dictionary of English v.0.48:

Inductance \In*duc"tance\, n. (Elec.)
   Capacity for induction; the coefficient of self-induction.

   Note: The unit of inductance is the henry.
         [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

inductance
    n 1: an electrical phenomenon whereby an electromotive force
         (EMF) is generated in a closed circuit by a change in the
         flow of current [syn: induction, inductance]
    2: an electrical device (typically a conducting coil) that
       introduces inductance into a circuit [syn: inductor,
       inductance]