The Collaborative International Dictionary of English v.0.48:

Sarcoderm \Sar"co*derm\, sarcoderma \sar`co*der"ma\, n. [NL.
   sarcoderma. See Sarco-, and Derm.] (Bot.)
   (a) A fleshy covering of a seed, lying between the external
       and internal integuments.
   (b) A sarcocarp.
       [1913 Webster]