Definition of Compound radical. Meaning of Compound radical. Synonyms of Compound radical
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Definition of Compound radical
compound radical Radical Rad"i*cal, n.
1. (Philol.)
(a) A primitive word; a radix, root, or simple, underived,
uncompounded word; an etymon.
(b) A primitive letter; a letter that belongs to the
radix.
The words we at present make use of, and
understand only by common agreement, assume a
new air and life in the understanding, when you
trace them to their radicals, where you find
every word strongly stamped with nature; full of
energy, meaning, character, painting, and
poetry. --Cleland.
2. (Politics) One who advocates radical changes in government
or social institutions, especially such changes as are
intended to level class inequalities; -- opposed to
conservative.
In politics they [the Independents] were, to use
phrase of their own time. ``Root-and-Branch men,'
or, to use the kindred phrase of our own, Radicals.
--Macaulay.
3. (Chem.)
(a) A characteristic, essential, and fundamental
constituent of any compound; hence, sometimes, an
atom.
As a general rule, the metallic atoms are basic
radicals, while the nonmetallic atoms are acid
radicals. --J. P. Cooke.
(b) Specifically, a group of two or more atoms, not
completely saturated, which are so linked that their
union implies certain properties, and are conveniently
regarded as playing the part of a single atom; a
residue; -- called also a compound radical. Cf.
Residue.
4. (Alg.) A radical quantity. See under Radical, a.
An indicated root of a perfect power of the degree
indicated is not a radical but a rational quantity
under a radical form. --Davies &
Peck (Math.
Dict.)
5. (Anat.) A radical vessel. See under Radical, a.
Compound radical Compound Com"pound, a. [OE. compouned, p. p. of compounen. See
Compound, v. t.]
Composed of two or more elements, ingredients, parts;
produced by the union of several ingredients, parts, or
things; composite; as, a compound word.
Compound substances are made up of two or more simple
substances. --I. Watts.
Compound addition, subtraction, multiplication,
division (Arith.), the addition, subtraction, etc., of
compound numbers.
Compound crystal (Crystallog.), a twin crystal, or one
seeming to be made up of two or more crystals combined
according to regular laws of composition.
Compound engine (Mech.), a form of steam engine in which
the steam that has been used in a high-pressure cylinder
is made to do further service in a larger low-pressure
cylinder, sometimes in several larger cylinders,
successively.
Compound ether. (Chem.) See under Ether.
Compound flower (Bot.), a flower head resembling a single
flower, but really composed of several florets inclosed in
a common calyxlike involucre, as the sunflower or
dandelion.
Compound fraction. (Math.) See Fraction.
Compound fracture. See Fracture.
Compound householder, a householder who compounds or
arranges with his landlord that his rates shall be
included in his rents. [Eng.]
Compound interest. See Interest.
Compound larceny. (Law) See Larceny.
Compound leaf (Bot.), a leaf having two or more separate
blades or leaflets on a common leafstalk.
Compound microscope. See Microscope.
Compound motion. See Motion.
Compound number (Math.), one constructed according to a
varying scale of denomination; as, 3 cwt., 1 qr., 5 lb.;
-- called also denominate number.
Compound pier (Arch.), a clustered column.
Compound quantity (Alg.), a quantity composed of two or
more simple quantities or terms, connected by the sign +
(plus) or - (minus). Thus, a + b - c, and bb - b, are
compound quantities.
Compound radical. (Chem.) See Radical.
Compound ratio (Math.), the product of two or more ratios;
thus ab:cd is a ratio compounded of the simple ratios a:c
and b:d.
Compound rest (Mech.), the tool carriage of an engine
lathe.
Compound screw (Mech.), a screw having on the same axis two
or more screws with different pitch (a differential
screw), or running in different directions (a right and
left screw).
Compound time (Mus.), that in which two or more simple
measures are combined in one; as, 6-8 time is the joining
of two measures of 3-8 time.
Compound word, a word composed of two or more words;
specifically, two or more words joined together by a
hyphen.
