any substance capable of forming a covalent bond with a base by accepting a pair of electrons from it.
Origin of Lewis acid
First recorded in 1940–45; named after G. N. Lewis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin for Lewis acid
C20: named after G. N. Lewis (1875–1946), US chemist
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