mainshock

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|seismology}} The largest [[earthquake]] in a sequence, sometimes preceded by [[foreshock]]s and almost always followed by [[aftershock]]s which are of lesser intensity.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.