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Definition of seismic
seismic
/ˈsaɪz.mɪk/
seis · mic
Adverb:seismically
seismic Lexical Profile
CEFR
C1
Grade
9
Tier
2
Usage
Top 10k
Syllables
2
seismic Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Relating to, caused by, or characteristic of an earthquake or other vibration of the Earth and its crust.
Example
"Geologists installed sensitive instruments along the fault line to monitor seismic activity."
2
Of enormous proportions or having a profound, far-reaching effect.
Example
"The invention of the internet brought about a seismic shift in global communication and commerce."
Synonyms
View all synonyms for seismic Antonyms
View all antonyms for seismic• Rhymes for seismic
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Word Origin & Etymology
Coined in the mid-19th century from the Ancient Greek noun 'seismos' (meaning 'earthquake' or 'shock'), derived from the verb 'seiein' ('to shake'), combined with the adjectival suffix '-ic'.
Cite this Entry
Wordmom. (2026). Definition of Seismic. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/seismic