Louse (plural: lice) is the common name for the order Phthiraptera, which contains over 3,000 species of wingless insect.
Louse (plural: lice) is the common name for the order Phthiraptera, which contains over 3,000 species of wingless insect; three of these species are agents of human disease, including typhus. Lice are obligate ectoparasites of every bird order, and every mammal order except for monotremes, bats, cetaceans and pangolins. A louse's color varies from pale beige to dark gray; however, if feeding on blood, it may become considerably darker. Female lice are usually more common than the males, and some species are even known to be parthenogenetic. Head lice. Head lice are tiny insects that feed on blood from the human scalp. An infestation of head lice, called pediculosis capitis, most often affects children and usually results from the direct transfer of lice from the hair of one person to the hair of another.  Noun [edit]. louse ‎(plural lice or louses). 1  A small parasitic wingless insect of the order Phthiraptera. ( 2 colloquial, dated, not usually used in plural form) A contemptible person; one who has recently taken an action considered deceitful or indirectly harmful.  Lice are tiny insects that live on humans and feed on blood. When a large number of lice live and multiply on a person, it is called an infestation. Three different kinds of lice live on humans: 1  Head lice are usually found in hair, most often on the back of the neck and behind the ears. 2  Pubic lice, also called crabs, are usually found in the pubic area. 3  Body lice live and lay eggs (nits) in the seams of clothing. Medical Definition of LOUSE. : any of the small wingless usually flattened insects that are parasitic on warm-blooded animals and constitute the orders Anoplura and Mallophaga. plural lice \ˈlīs\ 1 Head lice are parasites that are found on human heads. 2  The word lice is plural for louse. 3  Head lice are spread by personal contact or the sharing of combs, brushes, caps, and other clothing. Head lice facts. 1  Head lice are parasites that are found on human heads. 2  The word lice is plural for louse. 3  Head lice are spread by personal contact or the sharing of combs, brushes, caps, and other clothing. 4  Head lice are a common problem with preschool and schoolchildren. louse. n. 1. pl. lice (līs) Any of numerous small, flat-bodied, wingless biting or sucking insects of the order Phthiraptera, which live as external parasites on birds and mammals, including humans. The lice are sometimes classified together with the psocids in the order Psocodea. 2. pl. 1 The word lice is plural for louse. 2  Head lice are spread by personal contact or the sharing of combs, brushes, caps, and other clothing. 3  Head lice are a common problem with preschool and schoolchildren. Head lice facts. 1  Head lice are parasites that are found on human heads. 2  The word lice is plural for louse. 3  Head lice are spread by personal contact or the sharing of combs, brushes, caps, and other clothing. 4  Head lice are a common problem with preschool and schoolchildren. For the disease known as head lice, see Head lice infestation. The head louse (Pediculus humanus capitis) is an obligate ectoparasite of humans that causes pediculosis capitis. Head lice are wingless insects spending their entire life on the human scalp and feeding exclusively on human blood. A much more distantly related species of hair-clinging louse, the pubic or crab louse (Pthirus pubis), also infests humans. It is visually different from the other two species and is much closer in appearance to the lice which infest other primates. Lice infestation of any part of the body is known as pediculosis.
https://en.wikipedia.org/wiki/Louse http://www.mayoclinic.org/diseases-conditions/head-lice/basics/definition/con-20030792 https://en.wiktionary.org/wiki/louse http://www.webmd.com/children/tc/lice-topic-overview http://www.merriam-webster.com/dictionary/louse http://www.medicinenet.com/head_lice/article.htm http://www.thefreedictionary.com/louse http://www.medicinenet.com/head_lice/article.htm https://en.wikipedia.org/wiki/Head_louse
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