Learning strategies is a concept frequently associated with learning in school contexts. However, a generalisation of this concept to describe various types of behaviours related to learning has produced some confusion and a lack of consistency in its application. In order to promote a more standard use of the term, a new definition is proposed after placing the concept in its original context. A new taxonomy is then described which classifies learning strategies in three different domains : metacognitive strategies, cognitive processing strategies, and cognitive executive strategies.