Definition of xenotime in English:

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xenotime

Pronunciation: /ˈzɛnə(ʊ)tʌɪm/

noun

[mass noun]
A yellowish-brown mineral which occurs in some igneous rocks and consists of a phosphate of yttrium and other rare earth elements.
Example sentences
  • Zircon, monazite, xenotime and white mica were extracted from the sample.
  • Other accessory minerals are apatite, zircon, monazite, huttonite and rare xenotime, uraninite and betafite.
  • Pale brown to yellow xenotime and zircon are abundant as fine crystals up to 2 mm in length in many of the miarolitic granite cavities as well as in pegmatite pockets.

Origin

Mid 19th century: from xeno-, apparently erroneously for Greek kenos 'vain, empty', + timē 'honour' (because it was wrongly supposed to contain a new metal).

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