parapodia
Noun
The word is derived from parapodium
Meaning
of Parapodium
Source: Webster's dictionaryExamples
Additional oblique muscles move the parapodia.
The parapodia appendages found in annelids therefore correspond to the stump feet of the velvet worms.
Behaviour Thecosomata beat their wing-like parapodia to "fly" through the water.
Most other species have external gills, often associated with the parapodia.