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Definition of rainbow cactus in English: rainbow cactusnoun Each of three small cylindrical cacti of south-western North America, Echinocereus pectinatus, E. rigidissimus, and E. dasyacanthus, which have red, pink, or yellow flowers and alternating rows of pinkish and grey-white spines creating a banded appearance.
Origin Mid 19th century; earliest use found in Dawson's Fort Wayne (Indiana) Daily Times. Definition of rainbow cactus in US English: rainbow cactusnoun Each of three small cylindrical cacti of south-western North America, Echinocereus pectinatus, E. rigidissimus, and E. dasyacanthus, which have red, pink, or yellow flowers and alternating rows of pinkish and grey-white spines creating a banded appearance.
Origin Mid 19th century; earliest use found in Dawson's Fort Wayne (Indiana) Daily Times. |