ˌenneacontaˈhedral, a. rare.
[f. Gr. ἐννεάκοντα (erron. for ἐνενήκοντα; see Dindorf in Stephani Thes.) ninety + ἔδρα base + -al1.]
Of a crystal: Having ninety faces.
| 1817 R. Jameson Char. Min. 202. |
ˌenneacontaˈhedral, a. rare.
[f. Gr. ἐννεάκοντα (erron. for ἐνενήκοντα; see Dindorf in Stephani Thes.) ninety + ἔδρα base + -al1.]
Of a crystal: Having ninety faces.
| 1817 R. Jameson Char. Min. 202. |
Oxford English Dictionary