n. The inward nature, true substance, or constitution of anything.n. Hence The distinctive characteristic; that which is expressed by the definition of any term: as, the essence of a miser's character is avarice.n. That part of anything which gives it its individual character or quality: as, this summary contains the essence of the book.n. Existence; being.n. An elementary ingredient or constituent; anything uncompounded: as, the fifth essence (that is, the fifth element in the philosophy of Aristotle, or the upper air, the other four being, in their order, earth, water, air, and fire). See quintessence.n. Anything of ethereal, pure, or heavenly substance; anything immaterial.n. Any kind of matter which, being an ingredient or a constituent of some better-known substance, gives it its peculiar character; an extract; especially, an oil distilled at a comparatively low temperature from a plant in which it already exists: as, essence of peppermint.n. Perfume; odor; scent; also, the volatile matter constituting perfume.n. Importance; moment; essentiality.To perfume; scent.n. n. The French designation for oil of cajeput.