QUICK ANSWER
"Bienvenidos" is a form of "bienvenido", an adjective which is often translated as "welcome". Learn more about "bienvenido" below.
bienvenido(
byehm
-
beh
-
nee
-
doh
)An adjective is a word that describes a noun (e.g., the big dog).
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
