ACANTHACEOUS (_comparative_ MORE ACANTHACEOUS, _superlative_ MOST ACANTHACEOUS)
* (botany): Of, pertaining to, or resembling, a member of the Acanthaceae family.[First attested in the mid 18th century.]
* Armed with prickles, as a plant.
* ^ Urdang, Laurence, ed. _The Random House College Dictionary._ 1st. New York: Random House, Inc., 1984.
* ^ Brown, Lesley, ed. _The Shorter Oxford English Dictionary._ 5th. Oxford: Oxford University Press, 2003.