The Collaborative International Dictionary of English v.0.48:
Vasiform \Vas"i*form\, a. [L. vas a vessel + -form.] (Biol.) Having the form of a vessel, or duct. [1913 Webster] Vasiform tissue (Bot.), tissue containing vessels, or ducts. [1913 Webster]WordNet (r) 3.0 (2006):
vasiform adj 1: constituting a tube; having hollow tubes (as for the passage of fluids) [syn: tubular, cannular, tubelike, tube-shaped, vasiform]