| Siphonifer | n. [ NL., fr. L. sipho, -onis, siphon + ferre to bear. ] (Zool.) Any cephalopod having a siphonate shell. [ 1913 Webster ] |
| Siphoniferous | a. [ Siphon + -ferous. ] (Zool.) Siphon-bearing, as the shell of the nautilus and other cephalopods. [ 1913 Webster ] |