Protometals

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Protometals \Pro`to*met"als\, n. pl.
     A finer form of metals, indicated by enhanced lines in their
     spark spectra (which are also observed in the spectra of some
     stars), obtained at the highest available laboratory
     temperatures (--Lockyer); as protocalcium, protochromium,
     protocopper, protonickel, protosilicon, protostrontium,


     prototitanium, protovanadium. -- {Pro`to*me*tal"ic}, a.
     [Webster 1913 Suppl.]