Definition of Christmas cactus in English:

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Christmas cactus

noun

A South American cactus with flattened segmented stems and red, pink, or white flowers, grown as a houseplant.
  • Schlumbergera bridgesii, family Cactaceae
Example sentences
  • While poinsettia is the most popular, a Christmas cactus in full bloom is a great gift and easy to care for once the flowers have faded.
  • You'll be glad to hear that my Christmas cacti are now dripping with pink buds and the geraniums on my frost-free balcony continue to bloom spectacularly.
  • Every fall, my Christmas cactus displays a spectacular profusion of blooms on a covered patio in San Mateo, California.

Origin

So named because it flowers at about the northern midwinter.

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