The following outline is provided as an overview of and topical guide to second-language acquisition: Second-language acquisition – process by which people learn a second language.
Second-language acquisition (often abbreviated to SLA) also refers to the scientific discipline devoted to studying that process.
Second language refers to any language learned in addition to a person's first language, including the learning of third, fourth, and subsequent languages.
It is also called second-language learning, foreign language acquisition, and L2 acquisition.
Second-language acquisition can be described as all of the following: History of second-language acquisition