In mathematics, more specifically in algebra, the adjective étale refers to several closely related concepts:
* Étale morphism
** Formally étale morphism
* Étale cohomology
* Étale topology
* Étale fundamental group
* Étale group scheme
* Étale algebra
Other
* Étale (mountain) in Savoie and Haute-Savoie, France
See also
* Sheaf_(mathematics)#The_.C3.A9tal.C3.A9_space_of_a_sheaf, Étalé space
* Etail, or online commerce
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