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A (EN)
litera, rzeczownik, symbol

To słowo może być również formą:
a (artykuł, przyimek, litera, przysłówek, symbol)

litera “A”

A
  1. litera A
    Alice began her alphabet lesson by writing an A on the whiteboard.

rzeczownik “A”

lp A, lm As
  1. najwyższa ocena w szkole, świadcząca o doskonałej pracy
    After studying all night, she earned As in all her subjects.

symbol “A”

A
  1. pierwszy dźwięk w skali a-moll (również standardowy ton do strojenia, wibrujący z częstotliwością 440 Hz)
    When tuning her violin, Maria always starts by adjusting the A string to match the 440 Hz pitch.
  2. grupa krwi z określonym antygenem
    If you have blood type A, you cannot donate blood to someone with type B because of the different antigens.
  3. całkowita liczba protonów i neutronów w jądrze atomu
    In the nucleus of an atom, A represents the total number of protons and neutrons combined.
  4. typ baterii nieco większy niż rozmiar AA
    The flashlight requires A batteries, which are harder to find than the more common AA size.
  5. najmniejszy standardowy rozmiar miseczki biustonosza
    She realized she had been wearing the wrong bra size and needed to switch to an A cup.
  6. symbol pola w geometrii
    To find the total space inside the square, we need to calculate its area using the formula A = side × side.
  7. rodzaj prawa jazdy na motocykle
    To ride that, you need to obtain an A category license.
  8. amper (jednostka miary prądu elektrycznego)
    The electrician measured the current of the circuit and found it to be exactly 10 A.
  9. w genetyce jest to skrót od adeniny
    In the DNA sequence A T C G, "A" stands for adenine.
  10. w biochemii symbol alaniny w białkach
    In the protein sequence GAVLI, "A" stands for alanine.
  11. alt, skala głosu poniżej sopranu
    In the choir, she was assigned to sing the A part because of her rich alto voice.
  12. znak rozpoznawczy pojazdów dla Austrii
    On the back of the car, there was an "A" sticker indicating it was from Austria.