A
A battery, a vacuum tube filament type battery; A battery (size), a standard battery size Anode, an electrode; A, historical symbol for chemical element argon, currently Ar; The center of a hexagonal face of the Brillouin zone of a hexagonal lattice, in physics; Arts and media Books "A", a major poem by twentieth century author Louis Zukofsky; a, A Novel, by twentieth century artist Andy Warhol A, or a, is the first letter and the first vowel of the modern English alphabet and the ISO basic Latin alphabet. Its name in English is a (pronounced / ˈ eɪ /), plural aes. It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar.
With fresh material, taxonomic conclusions are leavened by recognition that the material examined reflects the site it occupied; a herbarium packet gives one only a small fraction of the data desirable for sound conclusions. Herbarium material does not, indeed, allow one to extrapolate safely: what you see is what you get A definition, not any particular or certain one of a class or group: a man; a chemical; a house. See more.
