SEXTANT n.
ular distances between objects, -- used esp. at sea, for ascertaining the latitude and longitude. It is constructed on the same optical principle as Hadley's quadrant, but usually of metal, with a nicer graduation, telescopic sight, and its arc the sixth, and sometimes the third, part of a circle. See Quadrant.…
SLAVE n.
ed by Formica sanguinea. -- Slave catcher, one who attempted to catch and bring back a fugitive slave to his master. -- Slave coast, part of the western coast of Africa to which slaves were brought to be sold to foreigners. -- Slave driver, one who superintends slaves at their work; hence, figuratively, a cruel task…
SOUR a.
k (Bot.), sorrel. -- Sour gourd (Bot.), the gourdlike fruit Adansonia Gregorii, and A. digitata; also, either of the trees bearing this fruit. See Adansonia. -- Sour grapes. See under Grape. -- Sour gum (Bot.) See Turelo. -- Sour plum (Bot.), the edible acid fruit of an Australian tree (Owenia venosa); also, the tr…
SPHERE n.
the problems connected with them, in astronomy and geography, as to the latitudes and longitudes, distance and bearing, of places on the earth, and the right ascension and declination, altitude and azimuth, rising and setting, etc., of the heavenly bodies; spherical geometry. -- Music of the spheres. See under Music.…