verb (used without object)
to exist beforehand.
to exist in a previous state.
verb (used with object)
to exist prior to (something or someone else); precede: primitive artifacts that preexisted sophisticated tools.
Also, pre-exist.

1590–1600; pre- + exist

preexistence, noun
preexistent, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To preexist
Example sentences
However, in this case, the disabling colitis did not preexist the industrial injury.
Claimant suffers from a number of physical conditions that preexist his industrial injury.
The legislation is silent on responsibility for any potential hazardous materials that may preexist on these parcels.
After installing the new alarms, the installer tests and cleans any smoke alarms that preexist in the residence.
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