(n.pl.) An order of pelagic Hydrozoa including species which form complex free-swimming communities composed of numerous zooids of various kinds, some of which act as floats or as swimming organs, others as feeding or nutritive zooids, and others as reproductive zooids. See Illust. under Physallia, and Porpita.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). siphonophora. Retrieved September 26, 2026, from http://smartdefine.org/siphonophora/definitions/2062357 |
| Chicago | Webster's. 2011. "siphonophora" http://smartdefine.org/siphonophora/definitions/2062357 (accessed September 26, 2026). |
| Harvard | Webster's 2011, siphonophora, Smart Define, viewed 26 September, 2026, <http://smartdefine.org/siphonophora/definitions/2062357>. |
| MLA | Webster's. "siphonophora" 28 May 2011. Web. 26 September 2026. <http://smartdefine.org/siphonophora/definitions/2062357> |