unmetallic

Adjective

unmetallic (not comparable)

1. Not metallic.
   • The light duſky blew concretes as well as the green, called by ſome Copper okers, yield a great deal of very good Copper when they are pure, which may be known from their colour and weight ; but thoſe that are more light are mixed with unmetallick earth, and thoſe that are yellow, containing iron...1763, Richard Brookes, “Copper”, in The Natural History of Waters, Earths, Stones, Fossils, and Minerals, volume V, London: J. Newbery, page 121
   • The acid, now impregnated with a new matter, paſſes on ; till meeting with ſome other convenient nidus, it lodges in that, and thereby acquires a freſh impregnation, perhaps at laſt totally unmetallick ; or, for want of meeting with a proper nidus, appears at the ſurface, weakly or ſtrongly...1778, William Pryce, “Of the Origin and Formation of Metals and Minerals”, in Mineralogia Cornubiensis; A Treatise on Minerals, Mines, and Mining, London: James Phillips, page 6

   Synonyms:

   nonmetallic