n. (Engin.) Ignition in an internal-combustion engine while the inlet valve is open or before compression is completed. [ Webster 1913 Suppl. ]
n. [ L. praemonitio. See Premonish. ] Previous warning, notice, or information; forewarning;
n. [ L. praemonitio. See Premonish. ] Previous warning, notice, or information; forewarning;