This is the 3528th most frequent Spanish word.
habremos
"Habremos" means "we will have" (first-person plural future tense of "haber").
Here, 'habremos' functions similarly as a future perfect auxiliary verb in 'we will have left', indicating a completion of the action 'salido' by a certain future time.
Para cuando regreses, habremos salido de la casa.
By the time you return, we will have left the house.
In this sentence, 'habremos' again acts as the first-person plural future perfect auxiliary verb 'we will have', expressing completion of the action 'viajado' in a future timeframe.
En unos años, habremos viajado a muchos países.
In a few years, we will have traveled to many countries.
The word 'habremos' is used as the first-person plural future perfect tense auxiliary verb 'we will have' combined with the past participle 'terminado' to express an action that will be completed before a certain point in the future.