esta

Esta is a term with several distinct uses in language and administration. It can function as a common feminine demonstrative in Romance languages and also appears as a personal name in some cultures, though its exact usage varies by region.

In linguistic terms, esta is commonly used in Spanish and Portuguese to mean "this" when describing a feminine noun. For example, esta casa means "this house." In contemporary Spanish orthography, the possessive or demonstrative sense is typically written without accent marks, though older texts sometimes used ésta to distinguish the pronoun form. The corresponding forms in other Romance languages share similar functions, reflecting a broader pattern of demonstratives across the family.

The acronym ESTA most often refers to the Electronic System for Travel Authorization in the United States. Administered by the Department of Homeland Security, ESTA is an automated pre-travel clearance for travelers from countries enrolled in the Visa Waiver Program. An approved ESTA allows air or sea travel to the United States, but it does not guarantee entry; final admission is determined by border officers. A valid ESTA generally remains active for two years or until the passport expires, and it permits multiple trips with stays of up to 90 days per visit.

See also:See also mentions of related terms and variations in different languages and contexts. The use of esta as a word or name can vary widely, and some cultures may assign additional meanings or spellings.