Meaning of annulation in English:

annulation

Pronunciation /anjʊˈleɪʃ(ə)n/

noun

Zoology

See annulate

‘At the same time, both genera have well-developed, multiannulate first antennae, whereas modern branchiopods have dwarfed first antennae without much of annulation or segmentation at all.’
  • ‘The annulations give the shell a segmented appearance.’
  • ‘It is characterized by a very gently tapered, finely laminated conical tube lacking strong transverse annulations.’
  • ‘The inner and outer tube surfaces are very smooth, without any indication of segmentation, annulation, or collaring.’
  • ‘The annulation is weakly developed along the surface opposite to the attached portion.’