Definition of chaeta in English:

chaeta

noun

Zoology
  • A stiff bristle made of chitin, especially in an annelid worm.

    • ‘In this respect, as indeed in their microstructure, the sclerites of Wiwaxia are fundamentally more comparable to polychaete chaetae.’
    • ‘The microscopic structure of the setae is identical to that of the chaetae of polychaete worms.’
    • ‘Likewise, the relative recalcitrance of various non-mineralizing tissues such as algal cyst walls, graptolite periderm, polychaete chaetae and arthropod cuticles contributes to their enhanced preservation potential.’
    • ‘Such differential preservation accords with the relative histologies of the two structures, polychaete chaetae being inherently tougher and more recalcitrant than the body-wall cuticle.’
    • ‘For example, chaetal sacks are one of the few ectodermal features of polychaetes that regularly express engrailed, and chaetae are the primary indurated elements in the ectoderm.’

Origin

Mid 19th century: modern Latin, from Greek khaitē ‘long hair’.

Pronunciation

chaeta

/ˈkēdə/