A
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- noun
Synonyms for A
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron)
any of several fat-soluble vitamins essential for normal vision
one of the four nucleotides used in building DNA
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(biochemistry) purine base found in DNA and RNA
the basic unit of electric current adopted under the Systeme International d'Unites
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the 1st letter of the Roman alphabet
the blood group whose red cells carry the A antigen
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Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.