- Alfred North,1861–1947, English philosopher and mathematician, in the U.S. after 1924.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- Alfred North. 1861–1947, English mathematician and philosopher, who collaborated with Bertrand Russell in writing Principia Mathematica (1910–13), and developed a holistic philosophy of science, chiefly in Process and Reality (1929)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- A tiny epidermal cystlike mass with a narrow or obstructed opening on the skin surface, which may rupture, caused by the retention of secretions of a sebaceous gland.closed comedo
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.