Definition of blank slate written for English Language Learners from the Merriam-Webster Learner's Dictionary with audio pronunciations, usage examples, and count/noncount noun labels. Examples of how to use “blank slate” in a sentence from the Cambridge Dictionary Labs Daniel B. blank slate synonyms, blank slate pronunciation, blank slate translation, English dictionary definition of blank slate. In psychology, the term “blank slate,” or tabula rasa, actually has two meanings: ... blank slate; Blank Slate Theory; blank space; blank squash; blank stock; Blank Stocks; Blank tape; blank tape halting problem; Blank Tape Spillage Fete; Blank tire; Blank tooling; Blank Transfer; Used other than with a figurative or idiomatic meaning… How to use blank slate in a sentence. blank slate (plural blank slates) (figuratively) Something that is clear and empty, or free from preconceptions and biases. Blank slate definition is - tabula rasa. Lisa Fritscher is a freelance writer and editor with a deep interest in phobias and other mental health topics. Define blank slate. Block, MD, is an award-winning, board-certified psychiatrist who operates a private practice in Pennsylvania.