1. a mind not yet affected by experiences, impressions, etc.
2. anything existing undisturbed in its original pure state.
Origin: In Latin tabula rasa means “erased tablet, a tablet rubbed clean (of writing).” Tabula has many meanings: “flat board, plank, table, notice board, notice, game board, public document, deed, will.” For schoolchildren the schoolmaster’s command Manum dē tabulā “Hand(s) off the tablet!” meant “Pencils down!” Rasa is the past participle of radere “to scrape, scratch, shave, clip.” The inside surfaces of a folded wooden tablet were raised along the edges and filled with wax for writing. The wax could be erased by smoothing with the blunt end of a stylus (more correctly stilus) or by mild heat. The Latin phrase is a translation of Greek pinakìs ágraphos “tablet with nothing written on it, blank tablet,” from Aristotle’s De Anima (Greek Perì Psychês, “On the Soul): “What it [the mind] thinks must be in it just as characters may be said to be on a writing tablet (pinakìs) on which nothing is yet actually written (ágraphos).” Tabula rasa entered English in the 16th century.
“The alarm wakes him, and he opens his eyes to a new day. He feels rested, reset, a tabula rasa.” - Lisa Genova, Inside The O'Briens, 2015