esenciální

Esenciální is a Czech adjective describing essential or fundamental aspects of something, often used for properties that are indispensable or core to the identity or function of a thing. It is also used in specific terms such as esenciální oleje (essential oils), esenciální aminokyseliny (essential amino acids), and esenciální mastné kyseliny (essential fatty acids).

In philosophy and science, esenciální properties are those that define the essence of an object, as opposed to properties that are accidental or changeable. The term is closely related to the English word essential and is part of modern scientific and philosophical vocabulary in Czech.

Etymologically, esenciální is derived from Latin essentia (essence) and entered Czech via French essentiel, reflecting broader European linguistic influence on technical and academic language. The standard spelling uses the acute on the first e (é), though it may appear capitalized as Esenciální in titles, at the start of a sentence, or in branded names.