Essential :: Essential (a.) Important in the highest degree; indispensable to the attainment of an object; indispensably necessary.
Essential :: Essential (a.) Containing the essence or characteristic portion of a substance, as of a plant; highly rectified; pure; hence, unmixed; as, an essential oil..
Essential :: Essential (a.) Necessary; indispensable; -- said of those tones which constitute a chord, in distinction from ornamental or passing tones..
Essential :: Essential (a.) Idiopathic; independent of other diseases.
Essentiality :: Essentiality (n.) The quality of being essential; the essential part.
Essentiate :: Essentiate (v. t.) To form or constitute the essence or being of.