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Topic: PHYSICS

invariable

 adjective
     
in‧var‧i‧a‧ble
1 always happening in the same way, at the same time etc:
His invariable answer was 'Wait and see.'
2 technicalHP never changing [≠ variable]:
Mass, unlike weight, is invariable.
Definition of invariable from the Longman Dictionary of Contemporary English within
the topic PHYSICS
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