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To lessen the velocity or momentum of; to retard; as, to deaden a ship's headway.

ial coupling, a form of slip coupling used in light machinery to regulate at pleasure the velocity of the connected shaft. -- Differential duties (Polit. Econ.), duties which are not imposed equally upon the same products imported from different countries. -- Differential galvanometer (Elec.), a galvanometer having t…

e involved in determining the units of other physical quantities. Thus, since the unit of velocity varies directly as the unit of length and inversely as the unit of time, the dimensions of velocity are said to be length ÷ time; the dimensions of work are mass × (length)2 ÷ (time)2; the dimensions of density are mass ÷…

m of physical units; that is, the force which, acting on a gram for a second, generates a velocity of a centimeter per second.

The art or science of measuring the force or velocity of projectiles by means of electricity.

ges, employing a large charge of powder and a light (short) bullet, giving a high initial velocity and consequently a flat trajectory. It is usually of moderately large caliber.

Swift in motion; moving with velocity; light and quick in going from place to place; nimble. In mail their horses clad, yet fleet and strong. Milton.

Swiftness; rapidity; velocity; celerity; speed; as, the fleetness of a horse or of time.

on of all magnitudes as generated by motion, and involving in their changes the notion of velocity or rate of change. Its results are the same as those of the differential and integral calculus, from which it differs little except in notation and logical method.

An instrument for registering the velocity of the blood.

A form of apparatus (somewhat different from the hemadrometer) for measuring the velocity of the blood.

The measurement of the velocity of the blood.

An instrument for measuring the velocity with which the blood moves in the arteries.

The act of measuring the velocity with which the blood circulates in the arteries; hæmotachometry.

allel to the direction of motion of, and having its length constantly proportional to the velocity of, a point moving in any path; -used in investigations respecting central forces.

it curves itself into a hoop, taking its tail into its mouth, and rolls along with great velocity. -- Hoop tree (Bot.), a small West Indian tree (Melia sempervirens), of the Mahogany family.

An instrument to measure the velocity of a liquid current by the force of its impact.

An instrument, variously constructed, used for measuring the velocity or discharge of water, as in rivers, from reservoirs, etc., and called by various specific names according to its construction or use, as tachometer, rheometer, hydrometer, pendulum, etc.; a current gauge.

Of or pertaining to measurement of the velocity, discharge, etc., of running water.

The art or operation of measuring the velocity or discharge of running water, as in rivers, etc.