Me*chan"ic*al (?), a. [From Mechanic, a.]

1. Pertaining to, governed by, or in accordance with, mechanics, or the

laws of motion; pertaining to the quantitative relations of force and

matter, as distinguished from mental, vital, chemical, etc.; as,

mechanical principles; a mechanical theory; mechanical deposits.

2. Of or pertaining to a machine or to machinery or tools; made or

formed by a machine or with tools; as, mechanical precision; mechanical

products.

We have also divers mechanical arts.

Bacon.

3. Done as if by a machine; uninfluenced by will or emotion; proceeding

automatically, or by habit, without special intention or reflection;

as, mechanical singing; mechanical verses; mechanical service.

4. Made and operated by interaction of forces without a directing

intelligence; as, a mechanical universe.

5. Obtained by trial, by measurements, etc.; approximate; empirical.

See the 2d Note under Geometric.

Mechanical effect, effective power; useful work exerted, as by a

machine, in a definite time. -- Mechanical engineering. See the Note

under Engineering. -- Mechanical maneuvers (Mil.), the application of

mechanical appliances to the mounting, dismounting, and moving of

artillery. Farrow. - - Mechanical philosophy, the principles of

mechanics applied to the investigation of physical phenomena. --

Mechanical powers, certain simple instruments, such as the lever and

its modifications (the wheel and axle and the pulley), the inclined

plane with its modifications (the screw and the wedge), which convert a

small force acting through a great space into a great force acting

through a small space, or vice versa, and are used separately or in

combination. -- Mechanical solution (Math.), a solution of a problem by

any art or contrivance not strictly geometrical, as by means of the

ruler and compasses, or other instruments.

Me*chan"ic*al, n. A mechanic. [Obs.] Shak.

Me*chan"ic*al*ize (?), v. t. To cause to become mechanical.

Me*chan"ic*al*ly, adv. In a mechanical manner.

Me*chan"ic*al*ness, n. The state or quality of being mechanical.

Mech`a*ni"cian (?), n. [Cf. F. mécanicien. See Mechanic.] One skilled

in the theory or construction of machines; a machinist. Boyle.

Me*chan`i*co-chem"ic*al (?), a. Pertaining to, connected with, or

dependent upon, both mechanics and chemistry; -- said especially of

those sciences which treat of such phenomena as seem to depend on the

laws both of mechanics and chemistry, as electricity and magnetism.

Me*chan"ics (?), n. [Cf. F. mécanique.] That science, or branch of

applied mathematics, which treats of the action of forces on bodies.

That part of mechanics which considers the action of forces in

producing rest or equilibrium is called statics; that which relates to

such action in producing motion is called dynamics. The term mechanics

includes the action of forces on all bodies, whether solid, liquid, or

gaseous. It is sometimes, however, and formerly was often, used

distinctively of solid bodies only: The mechanics of liquid bodies is

called also hydrostatics, or hydrodynamics, according as the laws of

rest or of motion are considered. The mechanics of gaseous bodies is

called also pneumatics. The mechanics of fluids in motion, with special

reference to the methods of obtaining from them useful results,

constitutes hydraulics.

Animal mechanics (Physiol.), that portion of physiology which has for

its object the investigation of the laws of equilibrium and motion in

the animal body. The most important mechanical principle is that of the

lever, the bones forming the arms of the levers, the contractile

muscles the power, the joints the fulcra or points of support, while

the weight of the body or of the individual limbs constitutes the

weight or resistance. -- Applied mechanics, the principles of abstract

mechanics applied to human art; also, the practical application of the

laws of matter and motion to the construction of machines and

structures of all kinds.

Mech"an*ism (?), n. [Cf. F. mécanisme, L. mechanisma. See Mechanic.] 1.

The arrangement or relation of the parts of a machine; the parts of a

machine, taken collectively; the arrangement or relation of the parts

of anything as adapted to produce an effect; as, the mechanism of a

watch; the mechanism of a sewing machine; the mechanism of a seed pod.

The Gutenberg Webster's Unabridged Dictionary: Section M, N, and O · 第 371 / 2147 题