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The Collaborative International Dictionary
Acetabuliform

Acetabuliform \Ac`e*tab"u*li*form\, a. [L. acetabulum + -form.] (Bot.) Shaped like a shallow cup; saucer-shaped; as, an acetabuliform calyx.
--Gray. [1913 Webster] ||

Wiktionary
acetabuliform

a. (context botany English) Shaped like a saucer or shallow cup.