| metals, rare earth | Elements of group IIIb of the periodic table from lanthanum, atomic number 57, to and including lutetium, atomic number 71. (12 Dec 1998) |
|---|---|
| metaluetic | Synonym: metasyphilitic. Synonym: metasyphilitic. Synonym: parasyphilitic. Origin: meta-+ L. Lues, pestilence (05 Mar 2000) |