SESAME n.
Either of two annual herbaceous plants of the genus Sesamum (S. Indicum, and S. orientale), from the seeds of which an oil is expressed; also, the small obovate, flattish seeds of these plants, sometimes used as food. See Benne. Open Sesame, the magical command which opened the door of the robber's den in the Arabian N…
A n.
, are all descended from the old Latin A, which was borrowed from the Greek Alpha, of the same form; and this was made from the first letter (Aleph, and itself from the Egyptian origin. The Aleph was a consonant letter, with a guttural breath sound that was not an element of Greek articulation; and the Greeks took it t…
ABERRATION n.
gence to different foci, by a lens or mirror, of rays of light emanating from one and the same point, or the deviation of such rays from a single focus; called spherical aberration, when due to the spherical form of the lens or mirror, such form giving different foci for central and marginal rays; and chromatic aberrat…