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ACID |
Chemical substance |
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COMPOUND |
Chemical substance consisting of two or more elements |
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CATALYST |
Substance which produces chemical reaction without undergoing any permanent change |
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CHEMICAL |
A substance used for producing a chemical effect; a
reagent. |
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PASSIVITY |
The quality or condition of any substance which has no
inclination to chemical activity; inactivity. |
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ARGON |
A substance regarded as an element, contained in the
atmosphere and remarkable for its chemical inertness. |
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LIGNIN |
A substance characterizing wood cells and differing from
cellulose in its conduct with certain chemical reagents. |
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CAUSTICAL |
Capable of destroying the texture of anything or eating
away its substance by chemical action; burning; corrosive; searing. |
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SPONGIN |
The chemical basis of sponge tissue, a nitrogenous,
hornlike substance which on decomposition with sulphuric acid yields
leucin and glycocoll. |
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DRUG |
Any animal, vegetable, or mineral substance used in the
composition of medicines; any stuff used in dyeing or in chemical
operations. |
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CHEMOLYSIS |
A term sometimes applied to the decomposition of
organic substance into more simple bodies, by the use of chemical
agents alone. |
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CAUSTIC |
Any substance or means which, applied to animal or other
organic tissue, burns, corrodes, or destroys it by chemical action; an
escharotic. |
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PLASMOGEN |
The important living portion of protoplasm, considered a
chemical substance of the highest elaboration. Germ plasm and idioplasm
are forms of plasmogen. |
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POLYMER |
Any one of two or more substances related to each other by
polymerism; specifically, a substance produced from another substance
by chemical polymerization. |
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NEUTRALIZE |
To render inert or imperceptible the peculiar
affinities of, as a chemical substance; to destroy the effect of; as,
to neutralize an acid with a base. |
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ABSTRACT |
To separate, as the more volatile or soluble parts of a
substance, by distillation or other chemical processes. In this sense
extract is now more generally used. |
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COMBINE |
To unite or join; to link closely together; to bring
into harmonious union; to cause or unite so as to form a homogeneous
substance, as by chemical union. |
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ANTIMONY |
...s
appearance and physical properties, but in its chemical relations
belonging to the class of nonmetallic substances. Atomic weight, 120.
Sym... |
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CHEMISM |
The force exerted between the atoms of elementary
substance whereby they unite to form chemical compounds; chemical
attaction; affinity; -- som... |
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ZYMOGEN |
A mother substance, or antecedent, of an enzyme or
chemical ferment; -- applied to such substances as, not being
themselves actual ferments, may by internal changes give rise to a
ferment. |
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METASOMATISM |
An alteration in a mineral or rock mass when
involving a chemical change of the substance, as of chrysolite to
serpentine; -- opposed to ordina... |
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ELASTIN |
A nitrogenous substance, somewhat resembling albumin,
which forms the chemical basis of elastic tissue. It is very insoluble
in most fluids, bu... |
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INCOMPATIBLE |
...hich
can not be placed or used together because of a change of chemical
composition or of opposing medicinal qualities; as, the incompatibles
... |
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MINERAL |
An inorganic species or substance occurring in nature,
having a definite chemical composition and usually a distinct
crystalline form. Rocks, e... |
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NEUROKERATIN |
...
tissue, as in the sheath of the axis cylinder of medullated nerve
fibers. Like keratin it resists the action of most chemical agents, and
by... |