late-19th

The compound "late-19th" is a modern English formation that combines a temporal descriptor with an ordinal number to pinpoint a specific historical era. The word "late" derives from the Proto-Germanic lataz, meaning "slow" or "slack," which evolved in English to also mean "far on in a period of time." The numeral "19th" is built on the ancient Germanic root for the number nine, traceable to Proto-Indo-European h₁néwn̥. The hyphenated construction follows a standard English pattern for creating compound adjectives that define chronological subsets, such as "mid-century" or "early modern." Thus, the term literally and logically denotes the concluding part of the nineteenth century.

Structure: late (temporal) + 19th (ordinal) - late: From Old English læt (slow, tardy, occurring after the proper time). In this compound, it functions as a temporal adjective meaning "toward the end of a period." - 19th: A numeral formed from the cardinal number "nineteen" (from Old English nigontīene) plus the ordinal suffix "-th" (from Old English -þa, -þe). It functions as an ordinal number specifying the century.