ÆNIGMA, denotes any dark saying, wherein some well-known thing is concealed under obscure language. The word is Greek, anigma, formed of anistresis, obscure innuere, to hint a thing darkly, and of nomos, an obscure speech or discourse. The popular name is riddle; from the Belgic roeden, or the Saxon araethon, to interpret. Fa. Bouhours, in the memoirs of Trevoux, defines an ænigma, A discourse, or painting, including some hidden meaning, which is proposed to be guessed.