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a

English

  1. 🔊 the blood group whose red cells carry the A antigen
  2. 🔊 the 1st letter of the Roman alphabet
  3. 🔊 the 1st letter of the Roman alphabet
  4. 🔊 (biochemistry) purine base found in DNA and RNA
  5. 🔊 one of the four nucleotides used in building DNA
  6. 🔊 the basic unit of electric current adopted under the Systeme International d'Unites
    “a typical household circuit carries 15 to 50 amps”
  7. 🔊 a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron)
  8. 🔊 any of several fat-soluble vitamins essential for normal vision

Spanish

  1. 🔊 bien cuidado a, usually self-employed, parked automobile attendant intended to prevent vandalism and theft

Similar words

type a group a a a ampere amp angstrom angstrom unit adenine deoxyadenosine monophosphate vitamin a antiophthalmic factor axerophthol