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Douglas Harper's Etymology Dictionary
pre-exist

1590s, from pre- + exist. Related: Pre-existed; pre-existing.

Wiktionary
pre-exist

alt. (alternative spelling of preexist English) vb. (alternative spelling of preexist English)

Usage examples of "pre-exist".

Publishers invite writers to turn out novels based on pre-existing formats, franchised universes.

At first it may have directed itself to research and discussion, to the elaboration of its ideal, to the discussion of a plan of campaign, but at some stage it must have assumed a more militant organisation, and have prevailed against and assimilated the pre-existing political organisations, and to all intents and purposes have become this present synthesised World State.

Wallace, in which he concludes, that 'every species has come into existence coincident both in space and time with a pre-existing closely allied species.

The meaning of the tale is therefore mine, and had long pre-existed in my garden of Adonis, and tried one body after another in vain.

It's easy enough to see that a coin is neither 'heads' nor 'tails' while it's still up in the air, spinning-but what if it's not even any particular coin7 What if there really are no pre-existing laws governing the system you're about to measure .

They might still have furnished an antidote, their own pre-existing magic bullet.

Later, they could form an (inappropriate, of course) association between this pre-existing representation of the bead in their brain and the sensation of sickness, and hence avoid the green bead when offered it again.

Of course he has acquired much of the pre-existing knowledge, or he could not have got on at all.

Some few naturalists, on the other hand, have believed that species undergo modification, and that the existing forms of life are the descendants by true generation of pre-existing forms.

If, on the other hand, we view 'Persistent Types' in relation to that hypothesis which supposes the species living at any time to be the result of the gradual modification of pre-existing species a hypothesis which, though unproven, and sadly damaged by some of its supporters, is yet the only one to which physiology lends any countenance.

This view of the relation of species in one region to those in another, does not differ much (by substituting the word variety for species) from that lately advanced in an ingenious paper by Mr Wallace, in which he concludes, that `every species has come into existence coincident both in space and time with a pre-existing closely allied species.

Their role had been to restore, maintain and unify a pre-existing network.

This design concentrates on the cutting room, since the earliest records will mainly be reissuing pre-existing recordings from up-time recordings.

The rocks were formed from pre-existing igneous and sedimentary rocks during mountain-building events in the deep past.

Pollock asserted that the rock formed in an ultradeep oceanic environment where extreme pressure metamorphosed a pre-existing rock, permitting some of the disparate metals to fuse.