Source : Webster's Revised Unabridged Dictionary (1913)

Catenulate \Ca*ten"u*late\, a. [L. catenuia, dim. of catena
   chain.]
   1. Consisting of little links or chains.

   2. (Zo["o]l.) Chainlike; -- said both or color marks and of
      indentations when arranged like the links of a chain, as
      on shells, etc.

Source : WordNet®

catenulate
     adj : having a chainlike form; "catenulate bacterial cell
           colonies" [syn: {chainlike}]
     v : arrange in a series of rings or chains, as for spores [syn:
         {catenate}]