Gain access to thousands of additional definitions and advanced search features—ad free! JOIN NOW
: a genus of lice of the family Pediculidae that includes the body louse (P. humanus humanus synonym P. h. corporis) and head louse (P. humanus capitis) infesting humans
: any louse of the genus Pediculus
Resources for pediculus
Comments on pediculus
What made you want to look up pediculus? Please tell us where you read or heard it (including the quote, if possible).
lying above or upon
Get Word of the Day daily email!
Words from Greek and Roman Mythology Quiz
Test your knowledge - and maybe learn something along the way.
Test Your Knowledge - and learn some interesting things along the way.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
Words from the week of 10/19/2018
The same, but different
At last we meet.
Getting a hold on two similar words.
And is one way more correct than the others?
The story of an imaginary word that managed to sneak past our editors and enter the dictionary.
How to use a word that (literally) drives some people nuts.
The awkward case of 'his or her'
A mythological/etymological mashup!
Words to improve your Scrabble game
A game of winding words.