three-hour
UK: ˌθriːˈaʊə | US: ˌθriːˈaʊər
adj. lasting for three hours
n. a period of three hours
The word "three-hour" is a straightforward compound formed by combining the numeral "three" (from Old English þrīe, meaning the number 3) and "hour" (from Old French hore, ultimately from Latin hōra, meaning a unit of time). The compound directly describes a duration of three hours, retaining the literal meanings of both morphemes. This structure is typical in English for creating time-related descriptors (e.g., "two-day," "five-minute").
The meeting was scheduled as a three-hour session.
She completed a three-hour exam without breaks.
The flight delay turned into a three-hour wait.
The documentary is a three-hour exploration of ancient history.
They hiked through a three-hour trail in the mountains.