from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A line on a map joining points of equal seismic intensity produced by an earthquake. Also know as an isoseismal line.
from The Century Dictionary and Cyclopedia
- n. A curve or line connecting points at which an earthquake-shock is felt with equal intensity, or at which there is an “equal overthrow” (Mallet). See homoseismal.
- Belonging or related to an isoseismal; having the character of an isoseismal: as, an isoseismal curve.
Sorry, no etymologies found.