WordNet (r) 3.0 (2006):

ci
    adj 1: being one more than one hundred [syn: hundred and one,
           one hundred one, 101, ci]
    n 1: a unit of radioactivity equal to the amount of a
         radioactive isotope that decays at the rate of
         37,000,000,000 disintegrations per second [syn: curie,
         Ci]

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

ci

    The country code for Cote d'Ivoire (the Ivory
   Coast).

   [Jargon File]

   (1999-01-27)