In philosophy, essence is the property or set of properties that make an entity or substancewhat it fundamentally is, and which it has bynecessity, and without which it loses itsidentity. Essence is contrasted with accident: a property that the entity or substance hascontingently, without which the substance can still retain its identity. The concept originates with Aristotle, who used the Greekexpression to ti ên einai (τὸ τί ἦν εἶναι,literally meaning “the what it was to be” and corresponding to the scholastic termquiddity) or sometimes the shorter phrase to ti esti (τὸ τί ἐστι, literally meaning “the what it is” and corresponding to the scholastic termhaecceity) for the same idea. This phrase presented such difficulties for its Latin translators that they coined the word essentia(English “essence”) to represent the whole expression. For Aristotle and his scholastic followers, the notion of essence is closely linked to that of definition (ὁρισμόςhorismos).. View more..