tuần

Etymology 1
.

Noun

 * 1) week any period of seven consecutive days
 * 2) week period of seven days in the Gregorian calendar beginning with Sunday or Monday
 * 3) one of three ten-day periods in a month in the Vietnamese calendar; a week
 * 4) a decade of age
 * 5) a time period
 * 6) instance, occurrence
 * 1) instance, occurrence

Usage notes
As the Gregorian calendar has displaced the Vietnamese lunisolar calendar as a civil calendar, this word has become more closely associated with the former's seven-day week than the latter's ten-day week. is often used for clarity or emphasis.