Definitions

from The Century Dictionary.

  • noun A genus of composite plants, of the tribe Helianthoideæ and subtribe Ambrosieæ.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Bot.) 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 WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

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

Etymologies

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Examples

  • 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 2005

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

    Drowned In Sound // Feed 2009

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