noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Infestation with head lice. uncountable, usually
2. 2
   infestation with lice (Pediculus humanus) resulting in severe itching wordnet

Synonyms

All synonyms

lousinessphthiriasis

Etymology

From Latin pēdiculus (“louse”) + -osis.

Related phrases

head louse

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.