Merriam-Webster Online Dictionary
dictionary (noun)1.
a reference source in print or electronic form containing words usually alphabetically arranged along with information about their forms, , functions, , meanings, and and idiomatic uses - pronunciations etymologies syntactical
2.
a reference book listing alphabetically terms or names important to a particular subject or activity along with discussion of their meanings and - applications
3.
a reference book listing alphabetically the words of one language and showing their meanings or translations in another language
4.
a list (as of items of data or words) used for reference (as for information retrieval or word processing) - computerized
Merriam-Webster Online Thesaurus
dictionary (noun)a reference book giving information about the meanings, pronunciations, uses, and origins of words listed in alphabetical order
SYNONIMS:
lexicon, wordbookRELATED WORDS:
gloss, glossary, nomenclator, thesaurus, vocabulary