cactus

[ kak-tuh s ]
/ ˈkæk təs /
|

noun, plural cac·ti [kak-tahy] /ˈkæk taɪ/, cac·tus·es, cac·tus.

any of numerous succulent plants of the family Cactaceae, of warm, arid regions of the New World, having fleshy, leafless, usually spiny stems, and typically having solitary, showy flowers.

Origin of cactus

1600–10; < Latin < Greek káktos cardoon

Related forms

cac·tus·like, cac·toid, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cactus

British Dictionary definitions for cactus

cactus

/ (ˈkæktəs) /

noun plural -tuses or -ti (-taɪ)

any spiny succulent plant of the family Cactaceae of the arid regions of America. Cactuses have swollen tough stems, leaves reduced to spines or scales, and often large brightly coloured flowers
cactus dahlia a double-flowered variety of dahlia

Derived Forms

cactaceous (kækˈteɪʃəs), adjective

Word Origin for cactus

C17: from Latin: prickly plant, from Greek kaktos cardoon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012