bastnasite bastite • basto · · · Info · Definitions · Synonyms · Characters · · bastnasite · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a yellow-to-brown mineral that is a source of rare earth elements. Synonyms: bastnaesite. · · Noun Definition 1 Synonyms · · · bastnaesite · · Synonym 1 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074