the blood group whose red cells carry the A antigen | a written message addressed to a person or organization |
the 1st letter of the Roman alphabet | the conventional characters of the alphabet used to represent speech |
the basic unit of electric current adopted under the Systeme International d'Unites | an award earned by participation in a school sport |
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation | a strictly literal interpretation (as distinct from the intention) |
any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes | owner who lets another person use something (housing usually) for hire |
one of the four nucleotides used in building DNA, also known as deoxyadenylate, or dAMP; all four nucleotides have a common phosphate group and a sugar (ribose) | |
(biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA | |