AXIS n.
which case it divides the curve into two symmetrical portions, as in the parabola, which has one such axis, the ellipse, which has two, or the circle, which has an infinite number. The two axes of the ellipse are the major axis and the minor axis, and the two axes of the hyperbola are the transverse axis and the conju…
BACK a. 2 definitions
erating backward; as, back action. Back charges, charges brought forward after an account has been made up. -- Back filling (Arch.), the mass of materials used in filling up the space between two walls, or between the inner and outer faces of a wall, or upon the haunches of an arch or vault. -- Back pressure. (Steam…
BALM n.
and from this tree is obtained the balm of Gilead of the shops, or balsam of Mecca. This has a yellowish or greenish color, a warm, bitterish, aromatic taste, and a fragrant smell. It is valued as an unguent and cosmetic by the Turks. The fragrant herb Dracocephalum Canariense is familiarly called balm of Gilead, and…