Definition of antennule in English:



  • A small antenna, especially either of the first pair of antennae in a crustacean.

    • ‘The presence of urine increases olfactory sampling through antennules flicking during fights.’
    • ‘A nauplius consists of the first three cephalic segments and the appendages belonging to those segments, the antennules, antennae, and mandibles.’
    • ‘To do this, it samples the environment as frequently as seven times a second with flicks of its ‘nose ‘- two whiplike appendages, or antennules, in front of its eyes.’’
    • ‘In the morphological domain, examples of novelties include the origin of feathers, new cusp patterns in mammalian teeth and altered numbers of antennule segments in copepod crustaceans.’
    • ‘Like many crabs, lobsters, and other crustaceans, stomatopods flick their antennules, probably to increase the velocity of their antennules relative to the surrounding fluid and reduce the boundary layer thickness.’
    antenna, tentacle, horn
    View synonyms


Mid 19th century: diminutive of antenna.