The Collaborative International Dictionary of English v.0.48:
Dehisce \De*hisce"\, v. i. [L. dehiscere; de- + hiscere to gape.] To gape; to open by dehiscence. [1913 Webster]WordNet (r) 3.0 (2006):
dehisce v 1: burst or split open; "flowers dehisce when they release pollen"