5. essence (in philosophy) the truenature or constitution of anything, as opposed to what is accidental, phenomenal, illusory, etc.
6. essence something that exists, esp. a spiritual or immaterial entity.
Definition of 'Essence'
Princeton's WordNet
1. (noun)kernel, substance, core, center, centre, essence, gist, heart, heart and soul, inwardness, marrow, meat, nub, pith, sum, nitty-gritty the choicest or most essential or most vital part of some idea or experience "the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story"
1. (noun)essence the central and unique identity of sth a song that expresses the essence of the band's music
Definition of 'Essence'
Webster Dictionary
1. (noun)Essence the constituent elementary notions which constitute a complex notion, and must be enumerated to define it; sometimes called the nominalessence
2. (noun)Essence the constituentquality or qualities which belong to any object, or class of objects, or on which they depend for being what they are (distinguished as real essence); the real being, divested of all logical accidents; that quality which constitutes or marks the true nature of anything; distinctive character; hence, virtue or quality of a thing, separated from its grosser parts
5. (noun)Essence the predominant qualities or virtues of a plant or drug, extracted and refined from grosser matter; or, more strictly, the solution in spirits of wine of a volatile or essential oil; as, the essence of mint, and the like
6. (noun)Essence perfume; odor; scent; or the volatile matter constituting perfume