Lice

Definition

Small, wingless parasitic insects that live on the skin of mammals and birds, feeding on blood, skin, or other secretions.

Etymology

From Old English 'lūs' (singular) and 'lȳs' (plural), related to similar words in other Germanic languages.

Example

Head lice infestations are common among school-aged children.

Synonyms

• Pediculus
• Parasitic insects

Related Terms

• Infestation
• Parasite
• Blood-feeding

Usage Notes

Lice are obligate parasites, meaning they cannot survive for long without a host. There are different types of lice, including head lice, body lice, and pubic lice.