A set of terms
that a user must agree to before signing up for a service
. These are the long blocks of legalese
you have to wade through before you sign up for your ISP
, email provider
, or web host
. Usually, failure to abide by the Terms of Service (or ToS
) results in cancellation of the service and deletion of your account.
In its abbreviated form, ToS is also used as a verb, to describe the deletion of an account for breaking the rules. "Geocities ToS'ed me for putting bomb-making instructions on my web site!"