ALTERNATE a. 2 definitions
Designating the members in a series, which regularly intervene between the members of another series, as the odd or even numbers of the numerals; every other; every second; as, the alternate members 1, 3, 5, 7, etc. ; read every alternate line.
ALTERNATIVE n. 3 definitions
An offer of two things, one of which may be chosen, but not both; a choice between two things, so that if one is taken, the other must be left. There is something else than the mere alternative of absolute destruction or unreformed existence. Burke.
AMPLITUDE n. 3 definitions
The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting. At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive. It is also northern or southern, when north or south of the equator.