A method of operating a communication system includes generating a transcript of at least a portion of a conversation between a plurality of users. The transcript includes a plurality of subsets of characters. The method further includes displaying the transcript on a plurality of communication devices, identifying an occurrence of at least one selected subset of characters from the plurality of subsets of characters, and querying a definition source for at least one definition for the selected subset of characters. The definition for the selected subset of characters is displayed on the plurality of communication devices.