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Related to time immemorial: since time immemorial
Long before one would be able to remember; the distant past. Our family line has presided over this land since time immemorial. Giant sea turtles have been coming to this spot to mate since time immemorial.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
Also, time out of mind. Long ago, beyond memory or recall, as in These ruins have stood here since time immemorial, or His office has been on Madison Avenue for time out of mind. The first expression comes from English law, where it signifies "beyond legal memory," specifically before the reign of Richard I (1189-1199), fixed as the legal limit for bringing certain kinds of lawsuit. By about 1600 it was broadened to its present sense of "a very long time ago." The variant, first recorded in 1432, uses mind in the sense of "memory" or "recall."
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
time immemorialused to refer to a point of time so long ago that people have no knowledge or memory of it.
In legal terms in Britain, time immemorial refers to the time up to the beginning of the reign of Richard I in 1189 . A variant of the phrase is time out of mind .
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