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

  • adj. Long, thin, and tapering; whip-shaped: flagelliform appendages.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. shaped like a whip

from the GNU version of the Collaborative International Dictionary of English

  • adj. Shaped like a whiplash; long, slender, round, flexible, and (comming) tapering.

from The Century Dictionary and Cyclopedia

  • Long, thin, and flexible, like the lash of a whip.
  • In botany, runner-like.


Latin flagellum, little whip; see flagellum + -form.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin flagellum ("whip") + -form (Wiktionary)


  • The Rays have been divided into several generic groups, and the one of which a drawing (_Aëtobates narinari_ [1]) is given, has very marked characteristics in its produced snout, pointed and winged-like pectoral fins, and exceedingly long, flagelliform tail.

    Sketches of the Natural History of Ceylon


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