Answer: quintessence

AnswerCrossword Clue
QUINTESSENCEPurest example
quintessence(in classical and medieval philosophy) A fifth substance in addition to the four elements, thought to compose the heavenly bodies and to be latent in all things
quintessenceThe aspect of something regarded as the intrinsic and central constituent of its character
quintessenceA refined essence or extract of a substance
quintessencethe pure, concentrated essence; the most perfect embodiment of something
quintessenceThe most perfect or typical example of a quality or class