A




A - noun

  • 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
  • the 1st letter of the Roman alphabet
  • the blood group whose red cells carry the A antigen

    • A - thesaurus

    adenine   amp   ampere   angstrom   axerophthol  

    Scrabble score for A

    a is 1
    Scrabble score = 1

    generated at 12:59:13 on 13-08-24

    Spelling dictionary home

    Try Spellzone for free

    Search for a word



    "Thank goodness for Spellzone during this remote learning phase. The site is easy for students to navigate independently and they're really enjoying the activities and spelling games. You get an awful lot for your money with Spellzone. Really reassuring is the very prompt response with helpdesk queries. I've very rarely needed the helpdesk, but when I have, the issue has been addressed and sorted within a very short time."

    Sarah Taggart, Oasis Academy Lord's Hill