[C] [D] [E]
[F] [G] [H]
[I] [J] [K]
[L] [M] [N]
[O] [P] [Q]
[R] [S] [T]
[U] [V] [W]
[X] [Y] [Z]
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A 1Definition: The first letter of the English and of many other
alphabets. The capital A of the
alphabets of Middle and Western
Europe, as also the small letter (a), besides the
forms in Italic, black letter,
etc., 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 of the Phoenician alphabet, the equivalent of the Hebrew
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 to represent their vowel Alpha with the a sound, the Phoenician alphabet having no vowel
A 2Definition: The name of the sixth tone in the model major scale (that in C), or the first tone of the minor scale, which is named after it the scale in A minor. The second string of the violin is tuned to the A in the treble staff. A sharp (A/) is the name of a musical tone intermediate between A and B. A flat (A/) is the name of a tone intermediate between A and G.
A 3Definition: An adjective, commonly called the indefinite article, and signifying one or any, but less emphatically.
A 4Definition: In each; to or for each; as, "twenty
leagues a day", "a hundred pounds a year", "a dollar a yard",
A 5Definition: In; on; at; by.
A 6Definition: In process of; in the act of; into; to; used with verbal
substantives in -ing which begin with a consonant. This is a
shortened form of the preposition an (which was used before the vowel sound); as in a hunting, a building, a begging.
A 7Definition: Of.
A 8Definition: A barbarous corruption of have, of he, and sometimes of it and of they.
A 9Definition: An expletive, void of sense, to fill up the meter
A 10Definition: the
1st letter of the Roman alphabet
A 11Definition: the blood group whose red
cells carry the A antigen
A 12Definition: the basic unit of electric current adopted under the
d''Unites; "a typical household circuit carries to
A 13Definition: a metric unit of length equal to one ten billionth of a meter (or micron); used to specify
wavelengths of electromagnetic radiation
A 14Definition: (biochemistry) purine base found in DNA and RNA;
pairs with thymine in DNA and with uracil in RNA
A 15Definition: one of the four
nucleotides used in building DNA; all four
nucleotides have a common phosphate group and a sugar (ribose)
A 16Definition: any of several
fat-soluble vitamins essential for normal vision;
prevents night blindness or inflammation or dryness of the eyes