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Pronunciation varies by accent · noun
(seismology) The largest earthquake in a sequence, sometimes preceded by foreshocks and almost always followed by aftershocks which are of lesser intensity..
Use mainshock when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Mainshock means (seismology) The largest earthquake in a sequence, sometimes preceded by foreshocks and almost always followed by aftershocks which are of lesser intensity..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use mainshock where its definition matches the intended context.
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