thu

Thu is a term with several distinct meanings in English and Vietnamese. In English, Thu is the standard three-letter abbreviation for Thursday on calendars and schedules. Thursday, named for the Norse god Thor, is traditionally the fourth day of the week in many Western systems.

In Vietnamese, Thu means autumn and is also used in the naming of the days of the week. The weekdays are commonly referred to as Thu Hai (Monday), Thu Ba (Tuesday), Thu Tu (Wednesday), Thu Nam (Thursday), Thu Sau (Friday), Thu Bay (Saturday); Sunday is typically Chu Nhat. The word Thu by itself can denote the concept of a day of the week. Thu is also a common female given name in Vietnam, often associated with autumn or harvest.

Thu as a term can also appear in other contexts such as transliteration and personal names in Southeast Asian contexts, where diacritics distinguish meanings. The exact interpretation depends on language and spelling, so the term may refer to a calendar abbreviation, a season, a given name, or other culturally specific usages.