xenotime
/ˈzenətaɪm/noun
mass noun
1- a yellowish-brown mineral which occurs in some igneous rocks and consists of a phosphate of yttrium and other rare-earth elements【矿】磷钇矿。
1.1
- Composition: native yttrium phosphate成分：天然钇磷酸盐。
词源
mid 19th cent.: from XENO-, apparently erroneously for Greek kenos 'vain， empty'， + timē 'honour' (because it was wrongly supposed to contain a new metal).