cactus

American  

[kak-tuhs] / ˈkæk təs /

noun

plural

cacti, cactuses, cactus

1. 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.

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cactus British  

/ kækˈteɪʃəs, ˈkæktəs /

noun

1. 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

2. a double-flowered variety of dahlia

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Usage

Plural word for cactus The plural form of cactus can be either cacti, cactuses, or cactus. Cacti is most commonly used. Like many words derived from Latin, it is pluralized by replacing the -us ending with -i, as in fungus/fungi and nucleus/nuclei. However, the plural form cactuses, created by adding the typical -es to the end, is also correct. This alternative plural form is also acceptable for some other Latin-derived or related terms, as in focus/foci/focuses and radius/radii/radiuses.

Other Word Forms

• cactaceous adjective
• cactoid adjective
• cactuslike adjective

Etymology

Origin of cactus

1600–10; < Latin < Greek káktos cardoon

Example Sentences

I tried to flip over, but the pain in my right leg was too much, and the rest of my body stung because a cactus had left its points in me.

From Literature

Massive yuccas and barrel cacti stud its steep slopes.

From Los Angeles Times

Dragon fruit is a climbing cactus, making it an unusual fruit to cultivate.

From BBC

One is the charming pueblo in foothills lined with neat rows of agave cactus.

From Los Angeles Times

PHOENIX—On a desolate stretch of land dotted with cactuses some 30 minutes north of Phoenix, more than 30 cranes tower over a construction site 2½ times the size of New York City’s Central Park.

From The Wall Street Journal