Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of essential is as below...

Integral :: Integral (a.) Essential to completeness; constituent, as a part; pertaining to, or serving to form, an integer; integrant..

Ethyl :: Ethyl (n.) A monatomic, hydrocarbon radical, C2H5 of the paraffin series, forming the essential radical of ethane, and of common alcohol and ether..

Thorite :: Thorite (n.) A mineral of a brown to black color, or, as in the variety orangite, orange-yellow. It is essentially a silicate of thorium..

Methenyl :: Methenyl (n.) The hypothetical hydrocarbon radical CH, regarded as an essential residue of certain organic compounds..

Stereoscope :: Stereopticon (n.) An instrument, consisting essentially of a magic lantern in which photographic pictures are used, by which the image of a landscape, or any object, may be thrown upon a screen in such a manner as to seem to stand out in relief, so as to form a striking and accurate representation of the object itself; also, a pair of magic lanterns for producing the effect of dissolving views..

Mortify :: Mortify (v. t.) To destroy the active powers or essential qualities of; to change by chemical action.

Flint Glass :: Flint glass () A soft, heavy, brilliant glass, consisting essentially of a silicate of lead and potassium. It is used for tableware, and for optical instruments, as prisms, its density giving a high degree of dispersive power; -- so called, because formerly the silica was obtained from pulverized flints. Called also crystal glass. Cf. Glass..

Hesperornis :: Hesperornis (n.) A genus of large, extinct, wingless birds from the Cretaceous deposits of Kansas, belonging to the Odontornithes. They had teeth, and were essentially carnivorous swimming ostriches. Several species are known. See Illust. in Append..

Member :: Member (n.) Any essential part, as a post, tie rod, strut, etc., of a framed structure, as a bridge truss..

Form :: Form (n.) To go to make up; to act as constituent of; to be the essential or constitutive elements of; to answer for; to make the shape of; -- said of that out of which anything is formed or constituted, in whole or in part..

Thienyl :: Thienyl (n.) The hypothetical radical C4H3S, regarded as the essential residue of thiophene and certain of its derivatives..

Gratiolin :: Gratiolin (n.) One of the essential principles of the hedge hyssop (Gratiola officinalis).

Saponul :: Saponul (n.) A soapy mixture obtained by treating an essential oil with an alkali; hence, any similar compound of an essential oil..

Periclasite :: Periclasite (n.) A grayish or dark green mineral, consisting essentially of magnesia (magnesium oxide), occurring in granular forms or in isometric crystals..

Perigone :: Perigone (n.) Any organ inclosing the essential organs of a flower; a perianth.

Tasimer :: Tasimer (n.) An instrument for detecting or measuring minute extension or movements of solid bodies. It consists essentially of a small rod, disk, or button of carbon, forming part of an electrical circuit, the resistance of which, being varied by the changes of pressure produced by the movements of the object to be measured, causes variations in the strength of the current, which variations are indicated by a sensitive galvanometer. It is also used for measuring minute changes of temperature..

Principle :: Principle (n.) Any original inherent constituent which characterizes a substance, or gives it its essential properties, and which can usually be separated by analysis; -- applied especially to drugs, plant extracts, etc..

Gyrostat :: Gyrostat (n.) A modification of the gyroscope, consisting essentially of a fly wheel fixed inside a rigid case to which is attached a thin flange of metal for supporting the instrument. It is used in studying the dynamics of rotating bodies..

Vitals :: Vitals (n. pl.) Fig.: The part essential to the life or health of anything; as, the vitals of a state..

Description :: Description (n.) A sketch or account of anything in words; a portraiture or representation in language; an enumeration of the essential qualities of a thing or species.

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