[
US
/ˈeɪ, ə/
]
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
- the 1st letter of the Roman alphabet
- the blood group whose red cells carry the A antigen
- (biochemistry) purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA
- one of the four nucleotides used in building DNA; all four nucleotides have a common phosphate group and a sugar (ribose)
- any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
-
the basic unit of electric current adopted under the Systeme International d'Unites
a typical household circuit carries 15 to 50 amps
How To Use A In A Sentence
- The difficulties of the next year or two will, no doubt, reawaken the pro-euro lobby.
- Liberal democracy is a fraud, a cover for the power of the elite. Times, Sunday Times
- There were 42 free-kicks, two penalties, four bookings and three players sent off, two of whom had to be escorted from the pitch by police.
- The ball rebounded from/off the wall into the pond.
- He described the sequence of events leading up to the robbery.
- Season with a pinch of salt and pepper. The Sun
- I can't find any relevant material on him in the library.
- It's good to have a cry sometimes.
- A thin veil of fog had rolled in off the bay, obscuring his view and coating the area in a pale gray-white mist.
- Jeff, clad in board trunks and a T-shirt, leans back in his chair with the lappie on his, uhhh, lap, and his bare feet up on the desk. Savages