parapodium

/par-uh-poh-dee-uhm/US // ˌpær əˈpoʊ di əm //UK // (ˌpærəˈpəʊdɪəm) //

陴县,旁观者,伞状物,伞形花序

Definitions

n.名词 noun

1
plural par·a·po·di·a [par-uh-poh-dee-uh]. /ˌpær əˈpoʊ di ə/. Zoology.
- : one of the unjointed rudimentary limbs or processes of locomotion of many worms, as annelids.

Neurocirri slender, subcylindric, somewhat conical distally or sometimes a little clavate, surpassing end of parapodium.
The parapodium is represented with its neural or ventral surface uppermost.
Also decidedly different from exigua in having four lobes at the distal end of each parapodium, two postsetal and two presetal.
The natocirrus is reduced to a small rounded or nodular form slightly above base of parapodium.
The notocirrus is small and occupies the usual place in the angle between the dorsal surface of the parapodium and the body-wall.