OVER prep.
Above in authority or station; -- implying government, direction, care, attention, guard, responsibility, etc.; -- opposed to Ant: under. Thou shalt be over my house. Gen. xli. 40. I will make thee rules over many things. Matt. xxv. 23. Dost thou not watch over my sin Job xiv. 16. His tender mercies are over all his wo…
PARALLELOGRAM n.
e resultant of two velocities, forces, accelerations, momenta, etc., both in quantity and direction, when the velocities, forces, accelerations, momenta, etc., are represented in quantity and direction by the two adjacent sides of the parallelogram.
PAWL n.
spaces, on another part, as a ratchet wheel, in such a manner as to permit motion in one direction and prevent it in the reverse, as in a windlass; a catch, click, or detent. See Illust. of Ratchet Wheel. [Written also paul, or pall.] Pawl bitt (Naut.), a heavy timber, set abaft the windlass, to receive the strain of…
PHOTOTAXIS; PHOTOTAXY n.
s infusorians, the zoöspores of certain algæ, etc.; also, the tendency to follow definite directions of motion or assume definite positions under such influence. If the migration is toward the source of light, it is termed positive phototaxis; if away from the light, negative phototaxis. --Pho`to*tac"tic (#), a. --Pho`…