existence originating from and having no source other than itself.
Origin of aseity
1685–95; < Medieval Latin asēitās, equivalent to Latin ā sē from oneself + -itās -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
philosophy existence derived from itself, having no other source
Word Origin for aseity
C17: from Medieval Latin aseitas, from Latin ā from + sē oneself
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
"being by itself," 1690s, from Medieval Latin aseitas "state of being by itself," from Latin a "from" + se "oneself" (see suicide).
Online Etymology Dictionary, © 2010 Douglas Harper