[1][2] The distinction is evident in Request for Comments documents from the early 1980s, when the transition from the ARPANET, funded by the U.S. Department of Defense, to the Internet, with broad commercial support, was in progress, although it was not applied with complete uniformity.
[3][4] Another example from that period is IBM's TCP/IP Tutorial and Technical Overview from 1989 (updated in 1998), which stated that: The word internet (also internetwork) is simply a contraction of the phrase interconnected network.
[5]In the Request for Comments documents that define the evolving Internet Protocol standards, the term was introduced as a noun adjunct, apparently a shortening of "internetworking"[6] and is mostly used in this way.
The term internet was originally coined as a shorthand for internetwork in the first specification of the Transmission Control Program, RFC 675, by Vint Cerf, Yogen Dalal, and Carl Sunshine in 1974.
[10] The New York Times, which followed suit in adopting the lowercase style, said that such a change is common practice when "newly coined or unfamiliar terms" become part of the lexicon.
"[15] Increasingly, organizations that formerly capitalized Internet have switched to the lowercase form, whether to minimize distraction (The New York Times)[11] or to reflect growing trends as the term became generic (Associated Press Stylebook).
[16] In 2016, the Oxford English Dictionary found that, based on a study of around 2.5 billion printed and online sources, "Internet" was capitalized in 54% of cases.