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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..

Mosasauria :: Mosasauria (n. pl.) An order of large, extinct, marine reptiles, found in the Cretaceous rocks, especially in America. They were serpentlike in form and in having loosely articulated and dilatable jaws, with large recurved tteth, but they had paddlelike feet. Some of them were over fifty feet long. They are, essentially, fossil sea serpents with paddles. Called also Pythonomarpha, and Mosasauria..

Strata :: Strass (n.) A brilliant glass, used in the manufacture of artificial paste gems, which consists essentially of a complex borosilicate of lead and potassium. Cf. Glass..

Constitutive :: Constitutive (a.) Tending or assisting to constitute or compose; elemental; essential.

Extraneous :: Extraneous (a.) Not belonging to, or dependent upon, a thing; without or beyond a thing; not essential or intrinsic; foreign; as, to separate gold from extraneous matter..

Scale :: Scale (n.) The thin oxide which forms on the surface of iron forgings. It consists essentially of the magnetic oxide, Fe3O4. Also, a similar coating upon other metals..

Nonessential :: Nonessential (n.) A thing not essential.

Principal :: Principal (n.) A principal or essential point or rule; a principle.

Pyroxenite :: Pyroxenite (n.) A rock consisting essentially of pyroxene.

Spermaceti :: Spermaceti (n.) A white waxy substance obtained from cavities in the head of the sperm whale, and used making candles, oilments, cosmetics, etc. It consists essentially of ethereal salts of palmitic acid with ethal and other hydrocarbon bases. The substance of spermaceti after the removal of certain impurities is sometimes called cetin..

Phonautograph :: Phonautograph (n.) An instrument by means of which a sound can be made to produce a visible trace or record of itself. It consists essentially of a resonant vessel, usually of paraboloidal form, closed at one end by a flexible membrane. A stylus attached to some point of the membrane records the movements of the latter, as it vibrates, upon a moving cylinder or plate..

Imitation :: Imitation (n.) One of the principal means of securing unity and consistency in polyphonic composition; the repetition of essentially the same melodic theme, phrase, or motive, on different degrees of pitch, by one or more of the other parts of voises. Cf. Canon..

Cedrene :: Cedrene (n.) A rich aromatic oil, C15H24, extracted from oil of red cedar, and regarded as a polymeric terpene; also any one of a class of similar substances, as the essential oils of cloves, cubebs, juniper, etc., of which cedrene proper is the type..

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

Formal :: Formal (a.) Belonging to the constitution of a thing, as distinguished from the matter composing it; having the power of making a thing what it is; constituent; essential; pertaining to or depending on the forms, so called, of the human intellect..

Blossom :: Blossom (n.) The flower of a plant, or the essential organs of reproduction, with their appendages; florescence; bloom; the flowers of a plant, collectively; as, the blossoms and fruit of a tree; an apple tree in blossom..

Determination :: Determination (n.) The act of defining a concept or notion by giving its essential constituents.

Spinel :: Spinelle (n.) A mineral occuring in octahedrons of great hardness and various colors, as red, green, blue, brown, and black, the red variety being the gem spinel ruby. It consist essentially of alumina and magnesia, but commonly contains iron and sometimes also chromium..

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

Duplicate :: Duplicate (n.) An original instrument repeated; a document which is the same as another in all essential particulars, and differing from a mere copy in having all the validity of an original..

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