quintessence

quintessence is a   Noun

Definition:

[1] The fifth or last and highest essence or power in a natural body. See Ferment oils, under Ferment. [Obs.]

[2] Hence: An extract from anything, containing its rarest virtue, or most subtle and essential constituent in a small quantity; pure or concentrated essence. Let there be light, said God; and forthwith light Ethereal, first of things, quintessence pure, Sprung from the deep. Milton.

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