formic (adj.)
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.