Longman Dictionary of Contemporary English - communicate

~ v 1 »EXPRESS« to express your thoughts and feelings clearly, so that other people understand them  (A baby communicates its needs by crying. | communicate sth to sb)  (Without meaning to, she communicated her anxiety to her child. | communicate itself)  (Dissatisfaction with working conditions communicated itself throughout the workforce.) 2 »EXCHANGE INFORMATION« to exchange information or conversation with other people, using words, signs etc  (He learnt how to use sign language to communicate with deaf customers.) 3 »CONTACT« formal to contact someone, especially by telephone or by writing a letter 4 »UNDERSTAND« if two people communicate, they can easily understand each other's thoughts and feelings  (Parents sometimes find it difficult to communicate with their teenage children.) 5 »ROOMS« if rooms or parts of a building communicate, you can get directly to one from the other 6 »DISEASE« T usually passive to pass a disease from one person or animal to another  (research into how the AIDS virus is communicated)