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3 definitions found

From: Taiwan MOE computer dictionary

 A
 A暫存器(同register,arithmetic)

From: WordNet (r) 2.0

 A
      n 1: the blood group whose red cells carry the A antigen [syn: type
           A, group A]
      2: a metric unit of length equal to one ten billionth of a
         meter (or 0.0001 micron); used to specify wavelengths of
         electromagnetic radiation [syn: angstrom, angstrom unit]
      3: any of several fat-soluble vitamins essential for normal
         vision; prevents night blindness or inflammation or
         dryness of the eyes [syn: vitamin A, antiophthalmic
         factor, axerophthol]
      4: one of the four nucleotides used in building DNA; all four
         nucleotides have a common phosphate group and a sugar
         (ribose) [syn: deoxyadenosine monophosphate]
      5: (biochemistry) purine base found in DNA and RNA; pairs with
         thymine in DNA and with uracil in RNA [syn: adenine]
      6: the basic unit of electric current adopted under the Systeme
         International d'Unites; "a typical household circuit
         carries 15 to 50 amps" [syn: ampere, amp]
      7: the 1st letter of the Roman alphabet

From: Easton's 1897 Bible Dictionary

 A
    Alpha, the first letter of the Greek alphabet, as Omega is the
    last. These letters occur in the text of Rev. 1:8,11; 21:6;
    22:13, and are represented by "Alpha" and "Omega" respectively
    (omitted in R.V., 1:11). They mean "the first and last." (Comp.
    Heb. 12:2; Isa. 41:4; 44:6; Rev. 1:11,17; 2:8.) In the symbols
    of the early Christian Church these two letters are frequently
    combined with the cross or with Christ's monogram to denote his
    divinity.