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Definition of "tentacle" []

  • Zoology An elongated flexible unsegmented extension, as one of those surrounding the mouth or oral cavity of the squid, used for feeling, grasping, or locomotion. (noun)
  • Botany One of the sensitive hairs on the leaves of insectivorous plants, such as the sundew. (noun)
  • A similar part or extension, especially with respect to the ability to grasp or stretch: an espionage network with far-reaching tentacles. (noun)
  • Any of various elongated flexible organs that occur near the mouth in many invertebrates and are used for feeding, grasping, etc (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • Any of the hairs on the leaf of an insectivorous plant that are used to capture prey (noun)
  • Something resembling a tentacle, esp in its ability to reach out or grasp (noun)

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Use "tentacle" in a sentence
  • "If one tentacle is chopped off, the starfish grows a new one, making it a model of resilience."
  • "The right tentacle is recognizable (blue arrow) and so is the pneumostome, the breathing hole (green arrow)."
  • "The structure of each tentacle is based on the Fin Ray Effect®."