a solid figure having 24 trapezoid faces, as occurring in some crystals
icositetrahedron in American English
(aiˌkousɪˌtetrəˈhidrən, aiˌkɑsə-)
nounWord forms: plural-drons or -dra (-drə)
a solid figure having 24 faces
Word origin
[1825–35; ‹ Gk eikosi- (comb. form of eíkosi twenty) + tetrahedron]This word is first recorded in the period 1825–35. Other words that entered Englishat around the same time include: archaic, cliché, electrolyte, individualism, spiritualism