The Oxford English Dictionary, or OED, is the most complete historical dictionary of the English language. It is ideal for tracing the history of a word.
Each entry contains an etymology, giving the origin of the word traced through various languages. Definitions of the word are given in order from oldest to newest, and each definition is followed by a series of quotations using the word, in chronological order.
Pronunciator is a fun way to learn any of 80 languages with self-directed lessons, live teachers, movies, music, and more. User's manual
Pronunciator es el servicio de aprendizaje de idiomas más grande del mundo. Manual de usuario