Definition of cereus in US English:



  • One of numerous neotropical cacti now or formerly included in the genus Cereus.

    • ‘That night everyone that wanted a cutting received one and the following June at our Red Hat picnic we awarded the person with the largest cereus a prize.’
    • ‘This species has long been known under the name of Cereus peruvianus, and is probably the most widely cultivated Cereus.’
    • ‘Another Arizona cereus is the Cereus thurberi commonly called the Organpipe cactus.’