- Umbraculiform Um*brac`u*li*form, a. [L. umbraculum any thing that furnishes shade, a bower, umbrella (dim. of umbra a shade) + -form.] Having the form of anything that serves to shade, as a tree top, an umbrella, and the like; specifically (Bot.), having the form of an umbrella; umbrella-shaped. [1913 Webster]
The Collaborative International Dictionary of English. 2000.