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"Alta" is a form of "alta", a noun which is often translated as "discharge form". "Ella" is a pronoun which is often translated as "she". Learn more about the difference between "alta" and "ella" below.
el alta(
ahl
-
tah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (medicine)
a. discharge form
Necesito una copia del alta médica que te dieron.I need a copy of the medical discharge form you were given.
2. (enrollment)
ella(
eh
-
yah
)A pronoun is a word that stands in for a noun (e.g., she).
c. it (things or animals)
Esa es mi casa. Detrás de ella hay un garaje.That's my house. Behind it, there's a garage.