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nounone of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
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nounthe blood group whose red cells carry the A antigentype of:
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nounany of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
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"a typical household circuit carries 15 to 50 amps"nounthe basic unit of electric current adopted under the Systeme International d'Unitestype of:
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nouna metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
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noun(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
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nounthe 1st letter of the Roman alphabet
Synonyms & Similar Words
letter base amp angstrom adenine deoxyadenosine monophosphate nucleotide group a type a blood group blood type antiophthalmic factor axerophthol vitamin a fat-soluble vitamin vitamin a2 dehydroretinol retinol vitamin a1 ampere current unit angstrom unit metric linear unit purine alphabetic character letter of the alphabet