Oxford Advanced Learner's Dictionary

The Oxford Advanced Learner's Dictionary (OALD) was the first advanced learner's dictionary of English. It was first published in 1948. It is the largest English-language dictionary from Oxford University Press aimed at a non-native audience. Users with a more linguistic interest, requiring etymologies or copious references, usually prefer the Concise Oxford English Dictionary, or indeed the comprehensive Oxford English Dictionary, or other dictionaries aimed at speakers of English with native-level competence.