SEXUAL a.
d (Bot.), a method of classification proposed by Linnæus, founded mainly on difference in number and position of the stamens and pistils of plants. -- Sexual selection (Biol.), the selective preference of one sex for certain characteristics in the other, such as bright colors, musical notes, etc.; also, the selection…
SHAFT n. 13 definitions
aft (Mach.), a main shaft of considerable length, in a shop or factory, usually bearing a number of pulleys by which machines are driven, commonly by means of countershafts; -- called also line, or main line. -- Shaft alley (Naut.), a passage extending from the engine room to the stern, and containing the propeller sh…
SHOCK n. 14 definitions
f sheaves of grain, as wheat, rye, or the like, set up in a field, the sheaves varying in number from twelve to sixteen; a stook. And cause it on shocks to be by and by set. Tusser. Behind the master walks, builds up the shocks. Thomson.
SHOOTING a. 4 definitions
iods, as on the 13th of November and 10th of August, they appear for a few hours in great numbers, apparently diverging from some point in the heavens, such displays being known as meteoric showers, or star showers. These bodies, before encountering the earth, were moving in orbits closely allied to the orbits of comet…
SIGNIFICANT a. 3 definitions
s; as, a significant event. Significant figures (Arith.), the figures which remain to any number, or decimal fraction, after the ciphers at the right or left are canceled. Thus, the significant figures of 25,000, or of .0025, are 25.
SIMILAR a. 4 definitions
Geom.), figures which differ from each other only in magnitude, being made up of the same number of like parts similarly situated. -- Similar rectilineal figures, such as have their several angles respectively equal, each to each, and their sides about the equal angles proportional. -- Similar solids, such as are con…