| septan | เกิดทุกเจ็ดวัน [แพทยศาสตร์ ๖ ส.ค. ๒๕๔๔] |
| Septane | n. [ L. septem seven. ] (Chem.) See Heptane. [ R. ] [ 1913 Webster ] |
| Septangle | n. [ Septi- + angle. ] (Geom.) A figure which has seven angles; a heptagon. [ R. ] [ 1913 Webster ] |
| Septangular | a. Heptagonal. [ 1913 Webster ] |