Definition

Relating to or containing cobalt, particularly in a form where cobalt has a valence of two.

Example

The chemist used cobaltous compounds in the experiment to study their properties.

Conversation

Have you seen the new exhibit at the science museum?

No, I haven't! What's special about it?

They have some stunning pieces featuring cobaltous minerals.

That sounds interesting! I’d love to check it out.

Synonyms & Antonyms

Root Explanation

Cobaltous → It is formed from "cobalt" (from German *Kobalt*, meaning goblin or evil spirit, referring to the troublesome nature of the metal) and the suffix "-ous" (meaning full of or having the qualities of). The word "cobaltous" refers to compounds containing cobalt, indicating the presence of this metal.

Memory Tip

Think of cobalt as a metal that has a troublesome history, and the suffix '-ous' means it has the qualities of cobalt, helping you remember that cobaltous refers to compounds containing this metal.

Visually Confused Words