Definition of moribund
1
: being in the state of dying : approaching death
in the moribund patient deepening stupor and coma are the usual preludes to death— Norman Cameron
2
: being in a state of inactivity or obsolescence
a moribund virus a moribund volcano prune the moribund files from your disk forever— D. S. Janal
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Merriam-Webster unabridged
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Time Traveler for moribund
The first known use of moribund was circa 1721
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