The Collaborative International Dictionary of English v.0.48:

-ee \-ee\ [Formed on the F. p. p. ending -['e], masc.]
   A suffix used, chiefly in law terms, in a passive
   signification, to indicate the direct or indirect object of
   an action, or the one to whom an act is done or on whom a
   right is conferred; as in assignee, donee, alienee, grantee,
   etc. It is correlative to -or, the agent or doer. Eek

WordNet (r) 3.0 (2006):

EE
    n 1: the branch of engineering science that studies the uses of
         electricity and the equipment for power generation and
         distribution and the control of machines and communication
         [syn: electrical engineering, EE]

The Free On-line Dictionary of Computing (19 January 2023):

ee

    The country code for Estonia.

   (1999-01-27)