Dictionary.net

(law) applying to essential legal principles and rules of right; "substantive law"

basic and fundamental; "the essential feature"

absolutely required and not to be used up or sacrificed

absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker"

basic and fundamental; "the essential feature"

absolutely required and not to be used up or sacrificed

absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker"

applying to essential legal principles and rules of right; "substantive law"

Belonging to the essence, or that which makes an object, or class of objects, what it is.

Hence, really existing; existent.

Important in the highest degree; indispensable to the attainment of an object; indispensably necessary.

Containing the essence or characteristic portion of a substance, as of a plant; highly rectified; pure; hence, unmixed; as, an essential oil.

Idiopathic; independent of other diseases.

Necessary; indispensable; - said of those tones which constitute a chord, in distinction from ornamental or passing tones.

Belonging to the essence, or that which makes an object, or class of objects, what it is.

Hence, really existing; existent.

Important in the highest degree; indispensable to the attainment of an object; indispensably necessary.

Containing the essence or characteristic portion of a substance, as of a plant; highly rectified; pure; hence, unmixed; as, an essential oil.

Idiopathic; independent of other diseases.

Necessary; indispensable; - said of those tones which constitute a chord, in distinction from ornamental or passing tones.

Most important; necessary to the existence of a thing; indispensable; pure.

That which is necessary to the existence of a thing; the basic principle.

Essentially.

Essentially.

Relating to or containing the essence: necessary to the existence of a thing: indispensable or important in the highest degree: highly rectified: pure.

Something essential or necessary: a leading principle.

Essentially.

Pertaining to the essence of anything; real; requisite; necessary.

That which Is essential or characteristic; a necessary element.

1. Necessary; characteristic; inherent. 2. Idiopathic.

Pertaining to an essence.

Anything essential.

Necessary to existence; indispensable; containing the essence; volatile and odorous, as oil.

Relating to the essence of a thing; necessary to the existence of a thing; important in the highest degree; highly rectified; pure.

That which is constitutive or necessary to the being or existence of a thing. Essential oils, volatile oils obtained from plants, usually by distillation with water. Essential character, that single quality which serves to distinguish one genus, species, &c., from another; the differentia.

Indispensably necessary; important in the highest degree; pure.

The word essential has been applied to the immediate or active principles of vegetables, which were believed to be endowed with the properties of the plants from which they were extracted. Essential oil was so called because it was regarded as the only immediate principle which was essential. This expression is retained. Essential salts are true salts or extracts which exist, ready formed, in vegetables; and which are obtained by distillation, incineration, or some other process. An essential disease is synonymous with a general disease; that is, one not depending on any local affection,-not symptomatic. See Entity

Pertaining to, or of the nature of, an essence.

Of or pertaining to an essence. See e. oil, under oil.

Indispensable.

Of diseases, specific in nature, not dependent on a local morbid process. Idiopathic. [Lat.]

n. First or constituent principle; the chief point; that which is most important.

Necessary to the constitution or existence of any thing; important in the highest degree, principal; pure, highly rectified, subtilly elaborated.

Existence; first or constituent principles; the chief point.