twentieth-century
UK: ˈtwentiəθ ˈsɛnʧʊri | US: ˈtwɛntiəθ ˈsɛnʧəri
adj. relating to the period between 1901 and 2000
n. the era spanning from 1901 to 2000
The word combines "twentieth," derived from Old English "twentig" (a compound of "twen-" [two] + "-tig" [group of ten]), with "century," from Latin "centuria" (from "centum," meaning "hundred"). The hyphenated form emerged in the 19th century to describe the 1900s, reflecting a shift toward era-specific terminology. The morphemes retain their original spellings while logically segmenting the concept into ordinal and temporal units.
Twentieth-century art revolutionized traditional techniques.
The invention of the internet was a pivotal twentieth-century achievement.
Her research focuses on twentieth-century political movements.
Jazz became a defining genre of twentieth-century music.
Many twentieth-century technologies are now obsolete.