Source : Webster's Revised Unabridged Dictionary (1913)

Microcyte \Mi"cro*cyte\, n. [Micro- + Gr. ? a hollow vessel.]
   (Physiol.)
   One of the elementary granules found in blood. They are much
   smaller than an ordinary corpuscle, and are particularly
   noticeable in disease, as in an[ae]mia.

Source : WordNet®

microcyte
     n : an abnormally small red blood cell (less than 5 microns in
         diameter)