The Collaborative International Dictionary of English v.0.48:

Egesta \E*ges"ta\, n. pl. [NL., neut. pl. from p. p. of L.
   egere. See Egest.] (Physiol.)
   That which is egested or thrown off from the body by the
   various excretory channels; excrements; -- opposed to
   ingesta.
   [1913 Webster]