Definition of Thysanura in US English:


plural noun

  • 1An order of insects that comprises the true, or three-pronged, bristletails.

    • ‘The database is being filled by chronological input from Thysanura literature on hand.’
    • ‘There are huge gaps in the early fossil record, since several basal hexapod groups have not been found at all in the Paleozoic: Protura, Diplura, and Thysanura.’
    • ‘The amber also contains an insect of particularly ancient origin, a bristletail, a member of insect Order Thysanura.’
    1. 1.1 Insects of the order Thysanura; bristletails.
      ‘thysanura with compound eyes’
      • ‘The Thysanura are primitive insects, wingless and with lengthened body that usually live in sheltered places avoiding the direct sunlight.’
      • ‘The Thysanura are widely distributed throughout warmer parts of the world.’


Modern Latin (plural), from Greek thusanos ‘tassel’ + oura ‘tail’.