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Verdigris :: Verdigris (n.) A green poisonous substance used as a pigment and drug, obtained by the action of acetic acid on copper, and consisting essentially of a complex mixture of several basic copper acetates..

Soul :: Soul (n.) The seat of real life or vitality; the source of action; the animating or essential part.

Polariscope :: Polariscope (n.) An instrument consisting essentially of a polarizer and an analyzer, used for polarizing light, and analyzing its properties..

Heteroousian :: Heteroousian (a.) Having different essential qualities; of a different nature.

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

Isatogen :: Isatogen (n.) A complex nitrogenous radical, C8H4NO2, regarded as the essential residue of a series of compounds, related to isatin, which easily pass by reduction to indigo blue..

Nectocalyx :: Nectocalyx (n.) One of the zooids of certain Siphonophora, having somewhat the form, and the essential structure, of the bell of a jellyfish, and acting as a swimming organ..

Dolerite :: Dolerite (n.) A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt..

Vital :: Vital (a.) Very necessary; highly important; essential.

Chloropal :: Chloropal (n.) A massive mineral, greenish in color, and opal-like in appearance. It is essentially a hydrous silicate of iron..

Cenanthy :: Cenanthy (n.) The absence or suppression of the essential organs (stamens and pistil) in a flower.

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..

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..

Lactucin :: Lactucin (n.) A white, crystalline substance, having a bitter taste and a neutral reaction, and forming one of the essential ingredients of lactucarium..

Attar :: Attar (n.) A fragrant essential oil; esp., a volatile and highly fragrant essential oil obtained from the petals of roses..

Essential :: Essential (a.) Idiopathic; independent of other diseases.

Radiophone :: Radiophone (n.) An apparatus for the production of sound by the action of luminous or thermal rays. It is essentially the same as the photophone.

Substantively :: Substantively (adv.) In a substantive manner; in substance; essentially.

Helleborin :: Helleborin (n.) A poisonous glucoside found in several species of hellebore, and extracted as a white crystalline substance with a sharp tingling taste. It possesses the essential virtues of the plant; -- called also elleborin..

Anomaly :: Anomaly (n.) Any deviation from the essential characteristics of a specific type.

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