Hypertext Webster Gateway: "ringent"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Ringent \Rin"gent\, a. [L. ringens, -entis, p. pr. of ringi to
open wide the mouth: cf. F. ringent.] (Bot.)
Having the lips widely separated and gaping like an open
mouth; as a ringent bilabiate corolla.
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