seis·mic·i·ty 
(sīz-mĭsĭ-tē)
(sīz-mĭsĭ-tē)n.
The frequency or magnitude of earthquake activity in a given area.
- trig
- trigeminal
- trigeminal nerve
- trigeminal neuralgia
- trigeminus
- trigeneration
- trigger
- triggerfish
- trigger-happy
- triggerman
- trigly
- triglyceride
- triglyph
- triglyphic
- trigness
- trigon
- trigonal
- trigonometric
- trigonometrical
- trigonometrically
- trigonometric function
- trigonometry
- trigram
- trigrammatic
- trigrammatically