Control variable

cupreous

1. of, consisting of, containing, or resembling copper; coppery

2. of the reddish-brown colour of copper

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

cupreous

[′kyü·prē·əs]

(science and technology)

Containing or resembling copper.

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.