Random House, Inc. The Random House Webster's Easy English Dictionary series features tens of thousands of words, phrases, and grammar for the non-native speakers, their teachers, and business professionals.
The intermediate level dictionary includes:
• Over 45,000 words, phrases, and idioms • Over 20,000 example sentences • Special focus on new words and business vocabulary
Baker & Taylor Offers a basic vocabulary with definitions written in simple language, intended for beginning students of American English as a second language.