This document provides definitions of language learning strategies (LLS) from various researchers between 1975-1996. It discusses that LLS refer to techniques or approaches used by language learners to acquire knowledge of a second language. Some key characteristics mentioned are that LLS are deliberate approaches used to learn and regulate learning, mental operations to accomplish learning tasks, and specific actions taken to make learning more effective. The document also distinguishes between LLS and language use strategies, noting that LLS are used for the purpose of learning while language use strategies are used for the purpose of communication.