cactus(redirected from Cactii)
Also found in: Thesaurus, Medical, Encyclopedia.
n. pl. cac·ti (-tī′) or cac·tus·es
1. Any of numerous succulent, spiny, usually leafless plants of the family Cactaceae, native chiefly to arid regions of the Americas, having variously colored, often showy flowers with numerous stamens and petals.
2. Any of several similar plants.
[Latin, cardoon, from Greek kaktos.]
n, pl -tuses or -ti (-taɪ)
1. (Plants) 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. (Plants) cactus dahlia a double-flowered variety of dahlia
[C17: from Latin: prickly plant, from Greek kaktos cardoon]
n., pl. -ti (-tī), -tus•es, -tus.
any of numerous New World flowering plants of the family Cactaceae, of warm and arid regions, with succulent, leafless stems usu. bearing spines.
[1600–10; < Latin < Greek káktos cardoon]
cac′tus•like`, cac′toid, adj.
Plural cacti (kăk′tī′) or cactuses
Any of various plants that have thick, leafless, often spiny stems and grow in hot, dry places, chiefly in North and South America. Photosynthesis takes place in the stems of cacti, as the leaves have evolved into narrow spines to prevent water loss. Some kinds of cacti have brightly colored flowers and edible fruit.
Did You Know? The 2,000 species of cacti are known for living in extremely dry climates, such as the American Southwest. Cacti are excellent at conserving water. Their leaves are sharp spines, which have been known to cause great pain to animals interested in eating them. The spines also help the plant gather scarce water. Water vapor in the air condenses on the spines and then drips to the ground, where it is taken up by the roots. The roots are shallow and widely spread out to take advantage of this condensation and the rare desert rain showers. A cactus can be between 80 and 90 percent water, and its thick walls keep its water from evaporating. In fact, a cactus can be a thousand times better at conserving water than a different kind of plant of the same weight.
Switch to new thesaurus
|Noun||1.||cactus - any succulent plant of the family Cactaceae native chiefly to arid regions of the New World and usually having spines|
Acanthocereus pentagonus, Acanthocereus tetragonus, pitahaya, pitahaya cactus - cactus of the southwestern United States and northern Mexico having edible juicy fruit
Aporocactus flagelliformis, rat's-tail cactus, rattail cactus - commonly cultivated tropical American cactus having slender creeping stems and very large showy crimson flowers that bloom for several days
Ariocarpus fissuratus, living rock - usually unbranched usually spineless cactus covered with warty tubercles and having magenta flowers and white or green fruit; resembles the related mescal; northeastern Mexico and southwestern United States
Carnegiea gigantea, saguaro, sahuaro - extremely large treelike cactus of desert regions of southwestern United States having a thick columnar sparsely branched trunk bearing white flowers and edible red pulpy fruit
night-blooming cereus - any of several cacti of the genus Cereus
coryphantha - a cactus of the genus Coryphantha
echinocactus, barrel cactus - any cactus of the genus Echinocactus; strongly ribbed and very spiny; southwestern United States to Brazil
hedgehog cereus - cactus of the genus Echinocereus
rainbow cactus - a stout cylindrical cactus of the southwest United States and adjacent Mexico
epiphyllum, orchid cactus - any cactus of the genus Epiphyllum having flattened jointed irregularly branching stems and showy tubular flowers
barrel cactus - a cactus of the genus Ferocactus: unbranched barrel-shaped cactus having deep ribs with numerous spines and usually large funnel-shaped flowers followed by dry fruits
Easter cactus, Hatiora gaertneri, Schlumbergera gaertneri - spring-blooming South American cactus with oblong joints and coral-red flowers; sometimes placed in genus Schlumbergera
night-blooming cereus - any of several cacti of the genus Hylocereus
Lophophora williamsii, mescal, mezcal, peyote - a small spineless globe-shaped cactus; source of mescal buttons
mammillaria - any cactus of the genus Mammillaria
feather ball, Mammillaria plumosa - a low tuberculate cactus with white feathery spines; northeastern Mexico
garambulla, garambulla cactus, Myrtillocactus geometrizans - arborescent cactus of western Mexico bearing a small oblong edible berrylike fruit
Knowlton's cactus, Pediocactus knowltonii - small clustering cactus of southwestern United States; a threatened species
nopal - any of several cacti of the genus Nopalea resembling prickly pears
prickly pear, prickly pear cactus - cacti having spiny flat joints and oval fruit that is edible in some species; often used as food for stock
cholla, Opuntia cholla - arborescent cacti having very spiny cylindrical stem segments; southwestern United States and Mexico
mistletoe cactus - a plant of the genus Rhipsalis
Christmas cactus, Schlumbergera baridgesii, Schlumbergera buckleyi - epiphytic cactus of Brazilian ancestry widely cultivated as a houseplant having jointed flat segments and usually rose-purple flowers that bloom in winter
night-blooming cereus - any of several night-blooming cacti of the genus Selenicereus
crab cactus, Schlumbergera truncatus, Thanksgiving cactus, Zygocactus truncatus - South American jointed cactus with usually red flowers; often cultivated as a houseplant; sometimes classified as genus Schlumbergera
succulent - a plant adapted to arid conditions and characterized by fleshy water-storing tissues that act as water reservoirs
صَبَّارصبّـار ، صَبْر
cây xương rồng
cactus[ˈkæktəs] [cacti] [ˈkæktaɪ] (pl) n → cactus m
n → Kaktus m
cactus[ˈkæktəs] n (cactuses or cacti (pl)) [ˈkæktaɪ] → cactus m inv
cactus(ˈkӕktəs) – plurals ˈcacti (-tӕi) ˈcactuses – noun
a prickly plant whose stem stores water. kaktus صبّـار ، صَبْر кактус cacto kaktus der Kaktus kaktus κάκτοςcactus kaktus کاکتوس kaktus cactusקקטוס कैक्टस kaktus kaktusz kaktus kaktus cactus さぼてん 선인장 kaktusas kaktuss kaktus cactuskaktuskaktus زقوم، يوازغن او بې پاڼ بوټى cacto cactus кактус kaktus kaktus kaktus kaktus พืชจำพวกหนึ่งไม่มีใบพบมากในแถบทะเลทราย;ต้นกระบองเพชร kaktüs 仙人掌 кактус تھور کا پودا cây xương rồng 仙人掌