Definition of insect in US English:

insect

noun

  • 1A small arthropod animal that has six legs and generally one or two pairs of wings.

    Insects are usually placed in the class Insecta (see also Hexapoda). The body of a typical adult insect is divided into head, thorax (bearing the legs and wings), and abdomen. The class includes many familiar forms, such as flies, bees, wasps, moths, beetles, grasshoppers, and cockroaches. Insects are the most numerous animals in both numbers of individuals and of different kinds, with more than a million species in all habitats except the sea, and they are of enormous economic importance as pests and carriers of disease, and also as pollinators

    • ‘If everyone keeps their promise this will also make a real difference to all sorts of wildlife from insects to birds.’
    • ‘In winter it feeds on the larvae of flying insects, and starts breeding very early in the season.’
    • ‘For Buddhists, there is no difference between insects and larger animals.’
    • ‘Being dinner for a swarm of insects is nobody's idea of a good time.’
    • ‘The pods release a gas that kills insects and animals that may be living in cargo.’
    • ‘The whole idea behind fly fishing is to mimic the different insects and aquatic animals fish feed on.’
    • ‘Mammals, birds, insects and plants have been monitored in the strips for five years.’
    • ‘It was an unusual insect, with coloured wings that faded from red to yellow.’
    • ‘This insect is among the most damaging arthropod pests of pears in North America and Europe.’
    • ‘Few other studies have correlated the influence of the full moon with behaviour of animals or insects.’
    • ‘Surviving juveniles disperse to the riffles and runs of the river to live on insect larvae and small crustaceans.’
    • ‘The Taverham visitor spent much time hunting for insects and larvae among fallen leaves in scrubby woodland.’
    • ‘The flightless birds and insects of such islands had clearly lost a highly complex function.’
    • ‘They have sections for amphibians, insects, mammals, fish, reptiles and more.’
    • ‘Voices that would seem possible only from the throat of a bird in fact arise from the wings of an insect.’
    • ‘Plants can use indirect defence mechanisms to protect themselves against herbivorous insects.’
    • ‘Each tree is a city to nature inhabited by mosses, birds, insects and small animals.’
    • ‘Useful insects such as bees or natural parasites and predators of pests may be affected by pesticide residues.’
    • ‘Carnivorous animals will eat live insects and some will eat mice and rats.’
    • ‘In the late afternoon there will be time for a nature walk to spot desert animals, birds and insects.’
    1. 1.1informal Any small invertebrate animal, especially one with several pairs of legs.
      • ‘For a web to be effective, it needs to be built so that an insect doesn't snap the web or bounce out of it.’
      • ‘This group includes all the insects such as mosquitoes, ticks, also spiders and centipedes.’

Origin

Early 17th century (originally denoting any small cold-blooded creature with a segmented body): from Latin (animal) insectum ‘segmented (animal)’ (translating Greek zōion entomon), from insecare ‘cut up or into’, from in- ‘into’ + secare ‘to cut’.

Pronunciation

insect

/ˈinˌsekt//ˈɪnˌsɛkt/