Formic acid, the simplest carboxylic acid, takes its name from the Latin word "formicus," which means:

1. Formic acid was first obtained from a natural biological source, which is reflected in its Latin-derived name. 2. The text states: "Its name comes from the Latin word formicus, which means 'ant'; it was first isolated by the distillation of red ants." 3. It is even responsible for some of the pain of ant and wasp stings, but the Latin root word itself specifically means "ant," not "sour," "vinegar," or "sting." 4. So formicus translates to ant. _Source: OpenStax Chemistry Ch 20 "Organic Chemistry", p.1125 §20.3 Aldehydes, Ketones, Carboxylic Acids, and Esters_