a

Definition of a:
a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation

any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes

one of the four nucleotides used in building DNA; 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

the basic unit of electric current adopted under the Systeme International d'Unites; "a typical household circuit carries 15 to 50 amps"

the 1st letter of the Roman alphabet

the blood group whose red cells carry the A antigen


Enron mail blog, Enron mail archive, Loan Morph, Pseudo Words, Franz Kafka, The Metamorphosis, Stock Morph, HostMon, Chess Morph, Search Morph, News Morph, I'm Sorry Dave - Dave's weblog bookmarks