Definitions

1. adjective

Relating to or containing mercury.

“The mercuric salts were highly toxic and had to be handled with caution.”

2. noun

A salt of mercury, especially a compound containing the ion Hg2+.

“Mercuric sulfide is a black mineral found in cinnabar deposits.”

3. adjective

Related to the planet Mercury, especially in an astrological or astronomical sense.

“Mercuric orbits of the planets were studied in great detail by astronomers.”