In ichthyology, a genus of fishes of the order of abdominals. Argentina is also a name of the wild tansy, silver-weed.

Like silver; pertaining to silver, or sounding like it.

In mineralogy, a subspecies of carbonate of lime, nearly pure; a mineral of a lamellated or slaty structure; its lamens usually curved or undulated; its surface is shining, or of a pearly luster. It is found in primitive rocks, and frequently in metallic veins.