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aries as the components of sun and moon waves approach to, or recede from, one another. A retardation from this cause is called the lagging of the tide, while the acceleration of the recurrence of high water is termed the priming of the tide. See Lag of the tide, under 2d Lag. -- Tide dial, a dial to exhibit the state…

To hold back by a trash or leash, as a dog in pursuing game; hence, to retard, encumber, or restrain; to clog; to hinder vexatiously. [R.] Beau. & Fl.

ch permit the passage of the contents of a vessel or cavity in one direction, but stop or retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves.

creasing or decreasing; -- in the former case called accelerated velocity, in the latter, retarded velocity; the acceleration or retardation itself being also either uniform or variable. -- Virtual velocity. See under Virtual.

A condition in which the circulation is retarded, and the entire mass of blood is less oxygenated than it normally is.

ference between the aggregate work of the accelerating forces of a system and that of the retarding forces is equal to one half the vis viva accumulated or lost in the system while the work is being done. -- Vis impressa Etym: [L.] (Mech.), force exerted, as in moving a body, or changing the direction of its motion; i…