Definition of "ancipital" []

• Two-edged instead of round; said of certain flattened stems, such as those of blue grass, and rarely also of leaves. (adjective)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "This is the common form of the ancipital ftcm, but it may have more angles than two; for Linneus gives not only digonus"
• "There is alfo an ancipital leaf, having two prominent longitudinal angles, with a convex difk •, as in Sifyrhichium."