Attrition may refer to *

Attrition warfare Attrition warfare is a military strategy consisting of belligerent attempts to win a war by wearing down the enemy to the point of collapse through continuous losses in personnel and materiel. The word ''attrition'' comes from the Latin root ...

, the military strategy of wearing down the enemy by continual losses in personnel and material **

War of Attrition The War of Attrition ( ar, حرب الاستنزاف, Ḥarb al-Istinzāf; he, מלחמת ההתשה, Milhemet haHatashah) involved fighting between Israel and Egypt, Jordan, the Palestine Liberation Organisation (PLO) and their allies fro ...

, fought between Egypt and Israel from 1968 to 1970 **

War of attrition (game) In game theory, the ''war of attrition'' is a dynamic timing game in which players choose a time to stop, and fundamentally trade off the strategic gains from outlasting other players and the real costs expended with the passage of time. Its precis ...

, a model of aggression in game theory *Loss of personnel by

withdrawal (military) A tactical withdrawal or retreating defensive action is a type of military operation, generally meaning that retreating forces draw back while maintaining contact with the enemy. A withdrawal may be undertaken as part of a general retreat, to ...

Attrition (research) In science, attrition are ratios regarding the loss of participants during an experiment. Attrition rates are values that indicate the participant drop out. Higher attrition rates are found in longitudinal studies. See also * Intention-to-tre ...

, loss of participants during an experiment *

Attrition (dental) Dental attrition is a type of tooth wear caused by tooth-to-tooth contact, resulting in loss of tooth tissue, usually starting at the incisal or occlusal surfaces. Tooth wear is a physiological process and is commonly seen as a normal part of ag ...

, loss of tooth structure by mechanical forces from opposing teeth *

Attrition (erosion) Attrition is the process of erosion that occurs during rock collision and transportation. The transportation of sediment chips and smooths the surfaces of bedrock; this can be through water or wind. Rocks undergoing attrition erosion are often foun ...

, the wearing away of rocks in rivers or the sea * ''Attrition'' (film), also known as ''Final Mission'', 2018 american film * Imperfect contrition, also known as attrition, in Catholic theology *

Customer attrition Customer attrition, also known as customer churn, customer turnover, or customer defection, is the loss of clients or customers. Banks, telephone service companies, Internet service providers, pay TV companies, insurance firms, and alarm monitorin ...

, loss of business clients or customers * Language attrition, loss of first language ability by multilingual speakers **

Second language attrition Second-language attrition is the decline of second-language skills, which occurs whenever the learner uses the second language to an insufficient degree ( de Bot & Weltens 1991:43) or due to environmental changes the language use is limited and an ...

, loss of second language ability

Proper names

Attrition (band) Attrition are an English electronic music band, formed in Coventry in 1980 by Martin Bowes and Julia Niblock. The band emerged from the experimental post-punk scene of the early 1980s and, along with other groups such as Throbbing Gristle, Coi ...

, an electronic music band * Attrition (website), a security website