Help Wordnik hunt for a million missing words by backing our Kickstarter!


from the GNU version of the Collaborative International Dictionary of English

  • n. A genus of composite plants in which the scales of the involucre are united so as to form a kind of bur; cocklebur; clotbur.

from The Century Dictionary and Cyclopedia

  • n. A genus of composite plants, of the tribe Helianthoide√¶ and subtribe Ambrosie√¶.

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

  • n. coarse herbs having small heads of greenish flowers followed by burrs with hooked bristles


Sorry, no etymologies found.


  • Three thousand maybe, foreign substance and things like xanthium gum, which is an artificial thickener, ammonium carbonate, which is a synthetic leavening agent that doesn't sound organic to me.

    CNN Transcript Nov 26, 2005

  • Gimme an MSG sandwich with a xanthium gum chaser, to go!

    Drowned In Sound // Feed


Log in or sign up to get involved in the conversation. It's quick and easy.