seism

1 of 2

noun

ˈsīzəm
plural -s

seism

2 of 2

noun combining form

ˌsīzəm
plural -s
: seismic movement
tachyseism

Word History

Etymology

Noun

Greek seismos

Noun combining form

Greek seismos earthquake

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

  1. Expanded definitions
  2. Detailed etymologies
  3. Advanced search tools
  4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Dictionary Entries Near seism

Cite this Entry

“Seism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seism. Accessed 25 Dec. 2024.

Kids Definition

seism-

combining form
variants or seismo-
: earthquake : vibration
seismograph
Etymology

Combining form

Greek seismos "earthquake," from seiein "to shake"

More from Merriam-Webster on seism

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!