Definition of "brachycephalic"

"Round-headed," he muttered. "Brachycephalic, gray-eyed, black-haired, with suggestion of the negroid. Celtic, I presume?"

1912, Arthur Conan Doyle, The Lost World […], London, New York, N.Y.: Hodder and Stoughton

Just how cosmopolitan the town was is clear from the fact that two different races are found buried in the graves: the dolichocephalic Eurafrican, and the brachycephalic Proto-Mediterranean.

1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 153

Also a subject of extensive investigation was the cephalic index, a measurement of the general shape of the skull, defined as the ratio of its breadth to its length multiplied by one hundred to eliminate the decimal point. Ratios below seventy-five indicated skulls that were long and narrow, termed “dolichocephalic”; those between seventy-five and eight, slightly broader or “mesocephalic”; and even rounder heads with ratios above eighty were called “brachycephalic.”

1996, William H. Tucker, The Science and Politics of Racial Research‎, University of Illinois Press, page 23