Learner's Dictionary - Martin H. Manser, Andrew Betsis

Restricted defining vocabulary, so students looking up a word will not find five more they don't know in the definition! Up-to-date and international coverage of today's vocabulary.  Special provision for those studying other subjects in English at the secondary school level (new scientific & technical entries added in the new edition). Example sentences for words presenting usage problems. Attractive illustrations where appropriate to increase  understanding of word meanings.  Guide to pronunciation &  Help with word formation: prefixes and suffixes. Coverage of weights and measures and SI units. Useful cross-references to show related words.