cuspidinen.

/ˈkʌspɪdʌɪn/Etymology: < Latin cuspid-em spear-point, cusp + -ine suffix1.
Mineralogy.
1882 J. D. Dana App. iii. 33 Cuspidine.
This entry has not yet been fully updated (first published 1893; most recently modified version published online June 2018).