from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Having gaping liplike parts, as the corolla of some flowers or the shells of certain bivalves.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having the semblance of lips parted wide, such as may be observed in certain flowers.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having the lips widely separated and gaping like an open mouth.

from The Century Dictionary and Cyclopedia

  • In botany, gaping: noting a bilabiate corolla with the lips widely spread and the throat open, as in the dead-nettle, Lamium.
  • In zoology, gaping irregularly, as parts of some zoöphytes and the valves of some shells.


Latin ringēns, ringent-, present participle of ringī, to open the mouth wide.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin ringens, from the verb ringi, to open wide. (Wiktionary)


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