Septic \Sep"tic\, a. [Septi- + -ic.]

(Math.) Of the seventh degree or order. -- n. (Alg.) A quantic of the seventh degree.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Septic \Sep"tic\, Septical \Sep"tic*al\, a. [L. septicus, Gr. ????, fr. ???? to make putrid: cf. F. septique.]

Having power to promote putrefaction.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Septic \Sep"tic\, n. A substance that promotes putrefaction.

Source: Webster's Revised Unabridged Dictionary (1913)