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A (EN)
lletra, nom, símbol

Aquesta paraula també pot ser una forma de:
a (article, preposició, lletra, adverbi, símbol)

lletra “A”

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

nom “A”

singular A, plural As
  1. la millor qualificació a l'escola, que demostra una feina excel·lent
    After studying all night, she earned As in all her subjects.

símbol “A”

A
  1. la primera nota en l'escala de La menor (també el to estàndard per a l'afinació, que vibra a 440 Hz)
    When tuning her violin, Maria always starts by adjusting the A string to match the 440 Hz pitch.
  2. un grup sanguini amb un antígen específic
    If you have blood type A, you cannot donate blood to someone with type B because of the different antigens.
  3. el nombre total de protons i neutrons en el nucli d'un àtom
    In the nucleus of an atom, A represents the total number of protons and neutrons combined.
  4. un tipus de bateria una mica més gran que la mida AA
    The flashlight requires A batteries, which are harder to find than the more common AA size.
  5. la mida estàndard més petita per a la copa d'un sostenidor
    She realized she had been wearing the wrong bra size and needed to switch to an A cup.
  6. el símbol de l'àrea en geometria
    To find the total space inside the square, we need to calculate its area using the formula A = side × side.
  7. un tipus de carnet de conduir per a motocicletes
    To ride that, you need to obtain an A category license.
  8. amper (la unitat per mesurar el corrent elèctric)
    The electrician measured the current of the circuit and found it to be exactly 10 A.
  9. en genètica, és l'abreviatura d'adenina
    In the DNA sequence A T C G, "A" stands for adenine.
  10. en bioquímica, el símbol per a l'alanina en proteïnes
    In the protein sequence GAVLI, "A" stands for alanine.
  11. contralt, el registre vocal per sota del soprano
    In the choir, she was assigned to sing the A part because of her rich alto voice.
  12. senyal distintiu de vehicle per a Àustria
    On the back of the car, there was an "A" sticker indicating it was from Austria.