Time long past, beyond memory or record. Also called time out of mind.(noun)
Law Time antedating legal records.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "time immemorial" in a sentence
"The conventional thinker will inevitably be shocked by Mrs. Stetson's ungloved handling of a relation which has been from time immemorial regarded as, on the one hand, sacred and beautiful, or, on the other, wanton and unmentionable."
"But by the Barnwell Process of 1430, it was decided that "transcribers, illuminators, bookbinders, and stationers have been, and are wont and ought to be -- as well by ancient usage from time immemorial undisturbedly exercised, as by concession of the Apostolic See -- the persons belong and are subject to the ecclesiastical and spiritual jurisdiction of the Chancellor of the University for the time being.""
"Precious Blood of Jesus Christ, a relic of which has been venerated since time immemorial in the cathedral of Mentone."