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

  • n. Any of numerous flowerlike marine coelenterates of the class Anthozoa, having a flexible cylindrical body and tentacles surrounding a central mouth.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of many polyps, of the order Actiniaria, which occurs in marine and estuarine habitats, and which captures its food using tentacles

from the GNU version of the Collaborative International Dictionary of English

  • Any one of numerous species of soft-bodied Anthozoa, belonging to the order Actinaria; an actinian.

from The Century Dictionary and Cyclopedia

  • n. An actinia; a cœlenterate of the class Actinozoa and order Malacodermata, of which there are several families besides the Actiniidæ, many genera, and numerous species.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. marine polyps that resemble flowers but have oral rings of tentacles; differ from corals in forming no hard skeleton


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