speech balloon

Speech balloons (also speech bubbles, dialogue balloons, or word balloons) are a graphic convention used in comic books, strips, and cartoons to allow words (and much less often, pictures) to be understood as representing the speech or thoughts of a given character in the comic. There is often a formal distinction between the balloon that indicates thoughts and the one that indicates words spoken aloud: the bubble that conveys subjective thoughts is often referred to as a thought balloon.
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