Insects

Definition

A class of invertebrates within the arthropod phylum, characterized by a segmented body, exoskeleton, and three pairs of jointed legs. They typically have a body divided into three parts (head, thorax, and abdomen), compound eyes, and antennae.

Etymology

From the Latin 'insectum', meaning 'with a divided body or cut into sections', from 'insecare', meaning 'to cut into'.

Example

The honeybee is one of the most well-known insects, playing a crucial role in pollination.

Synonyms

• Hexapods

Related Terms

• Arthropods
• Exoskeleton
• Metamorphosis
• Entomology
• Antennae
• Compound eyes

Usage Notes

Insects are the most diverse group of animals on Earth, with millions of species described and many more yet to be discovered.