Source : Webster's Revised Unabridged Dictionary (1913)

Arthromere \Ar"thro*mere\, n. [Gr. 'a`rqron joint + -mere.]
   (Zo["o]l.)
   One of the body segments of Arthropods. See {Arthrostraca}.
   --Packard.

Source : WordNet®

arthromere
     n : any of the segments in the body of a jointed animal like an
         arthropod