ˈsīfəˌnan(t)th noun
( -s )
Etymology: back-formation from obsolete English siphonanthous of or belonging to the siphonophoran suborder Siphonanthae, from New Latin Siphonanthae (from siphon- + -anthae — feminine plural of -anthus ) + English -ous
: a feeding zooid of a compound siphonophore