Wiktionary
nineteen hundred
num. 1 The start of the twentieth hour of the day on the 24-hour clock i.e. 19:00. 2 The number one thousand nine hundred. 3 The year http://en.wikipedia.org/wiki/1900.
Usage examples of "nineteen hundred".
Of the first two thousand Cayennes which had been abducted from the fields of French Guiana, nearly nineteen hundred grew to luscious maturity, and these first pineapples were an astonishment to the citizens of Hawaii.
A chap called Max Planck kicked it off in nineteen hundred with something he called the quantum theory of light, and Albert Einstein moved it along in nineteen oh five with his work on the photoelectric effect.