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

  • adj. Botany Having a spine or spines.
  • adj. Botany Terminating in a spine.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having a spine or spines.
  • adj. Terminating in a spine.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Becoming hard and thorny; tapering gradually to a rigid, leafless point; armed with spines.

from The Century Dictionary and Cyclopedia

  • In botany, tending to be hard and thorn-like; terminating in a spine or sharp point; armed with spines or thorns; spinose.
  • In zoology, somewhat spinous or spiny, as the fur of an animal; very coarse, harsh, or stiff, as hair; spinulous.


Late Latin spīnēscēns, spīnēscent-, present participle of spīnēscere, to become thorny, from Latin spīna, thorn.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • The thickets of the Fish, Sundays, and Gamtoos river valleys are sparse, succulent and spinescent.

    Albany thickets

  • The Maputaland-Pondoland Bushland and Thicket is less spinescent and less succulent, comprised of more grasses, and dominated by subtropical woody evergreen species.

    Albany thickets

  • These species-rich, dense thickets are composed of spinescent shrubs, woody creepers and succulents.

    Albany thickets

  • It generally consists of a closed canopy formation up to 6 meters (m) in height and frequently forms an impenetrable tangle of spinescent shrubs, low trees and vines.

    Maputaland-Pondoland bushland and thickets

  • Base of involucel turbinate, inner bristles longer, spreading and spinescent, ciliate at base 2.

    A Handbook of Some South Indian Grasses

  • The vegetation is generally gloomy and sad; it has the aspect of our evergreens or heaths; the plants are for the most part woody; the leaves of nearly all the plants are linear, lanceolated, small, coriaceous, and spinescent.

    Vestiges of the Natural History of Creation

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