Xenotime

Xen″o‐time (?), n. (xĕn″ō̍‐tīm), n. [Gr. ξενότιμοσ honoring guests or strangers; ξένοσ guest, stranger + τιμή honor: cf. G. xenotim.] (Min.) A native phosphate of yttrium occurring in yellowish-brown tetragonal crystals.