enneahedral, a.
(ˌɛnɪəˈhiːdrəl)
Also 9 enneaedral.
[f. Gr. ἐννέα nine + ἔδρα base + -al1.]
Having nine faces.
| 1802 Bournon in Phil. Trans. XCII. 253 Which..render the pyramids enneaedral. |
enneahedral, a.
(ˌɛnɪəˈhiːdrəl)
Also 9 enneaedral.
[f. Gr. ἐννέα nine + ἔδρα base + -al1.]
Having nine faces.
| 1802 Bournon in Phil. Trans. XCII. 253 Which..render the pyramids enneaedral. |
Oxford English Dictionary