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Webster 1913 Edition

(ŭm-brăk′ū̍-lĭ-fôrm)

Adj.

[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.

umbraculiform ‎(comparative more umbraculiform, superlative most umbraculiform)

(botany) Having the form of anything that serves to shade, such as a treetop or especially an umbrella.