A Meaning

There are 14 meaning(s) for word A

A Meaning 1 : the 1st letter of the Roman alphabet

A Meaning 2 : (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA

    Synonyms : adenine
A Meaning 3 : a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation

    Synonyms : angstrom,  angstrom unit
A Meaning 4 : the basic unit of electric current adopted under the Systeme International d'Unites

    Example : a typical household circuit carries 15 to 50 amps

    Synonyms : amp,  ampere
A Meaning 5 : any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes

    Synonyms : antiophthalmic factor,  axerophthol,  vitamin a
A Meaning 6 : the blood group whose red cells carry the A antigen

    Synonyms : group a,  type a
A Meaning 7 : one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)

    Synonyms : deoxyadenosine monophosphate
A Meaning 8 : one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)

    Synonyms : deoxyadenosine monophosphate
A Meaning 9 : the blood group whose red cells carry the A antigen

    Synonyms : group a,  type a
A Meaning 10 : any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes

    Synonyms : antiophthalmic factor,  axerophthol,  vitamin a
A Meaning 11 : the basic unit of electric current adopted under the Systeme International d'Unites

    Example : a typical household circuit carries 15 to 50 amps

    Synonyms : amp,  ampere
A Meaning 12 : a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation

    Synonyms : angstrom,  angstrom unit
A Meaning 13 : (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA

    Synonyms : adenine
A Meaning 14 : the 1st letter of the Roman alphabet

How to Pronounce A