Definition of pseudolabium in English:

pseudolabium

noun

Zoology
  • A mouthpart in various invertebrates; specifically: †(a) a gnathochilarium of a millipede (obsolete); (b) each of a pair of lobes or flaps formed on either side of the mouth by projections of the lining of the buccal cavity in nematodes of the order Spirurida.

Origin

Late 19th century; earliest use found in Alpheus Packard (1839–1905). From pseudo- + labium.

Pronunciation

pseudolabium

/ˌs(j)uːdəʊˈleɪbɪəm/