Definition of momentaneous
1
: momentary 1a
- the rapid momentaneous association of things which meet and pass
- —D. H. Lawrence
2
archaic
: instantaneous
- in which momentaneous explosion of the whole quantity all the force consists
- —William Clarke
3
of an aspect or form of a verb
: of, relating to, or characterizing action begun and terminated in an instant
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momentaneously
adverb
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