Know how to use "fewer" and "less"? Find out.
1791 (in formic acid), coined from Latin formica "ant" (see Formica (n.2)). The acid apparently first was noticed by Samuel Fisher and John Wray in 1670; it was first obtained in a fairly pure form in 1749 by German chemist Andreas Sigismund Marggraf (1709-1782), who prepared it by distilling red ants. It also is found in bee stings and stinging nettles.