quintessential (adj) - representing the most typical, ideal, or iconic essence of something; embodying the best of its kind [kwin-tuh-sen-shuhl]
quintessence is the perfect or most typical example of something; the purest essence of a thing
BREAKDOWN: The word quintessential bears scrutiny not because of some unusual derivation but due to the backstory of its roots:
QUINT- (fifth) + ES- (to be) + -ENCE (state of) + -IAL (pertaining to)
Basically, the fifth essence is the fifth element. The four classical alchemical elements–earth, air, fire, and water) were once thought to be the building blocks of all substances. As the theory evolved and scientists needed to explain phenomena such as gravity or light, a fifth element was added to represent the material that filled space or the heavens. The fifth element or quintessence–aether–was considered superior to the base elements, a perfection that is now awarded to that which is true or perfectly typical.
“The courage to press on regardless—regardless of whether we face calm seas or rough seas, and especially when the market storms howl around us—is the quintessential attribute of the successful investor.” —John C. Bogle

[Our Wednesday Wildcards are fascinating and important words that are not necessarily derived from classical roots.]
The Fifth Element is such a classic 7/10 weird sci fi almost-horror good/bad movie!