seis·mol·o·gy 
(sīz-mŏlə-jē)
(sīz-mŏlə-jē)n.
The geophysical science of earthquakes and the mechanical properties of the earth.
seis′mo·logic (-mə-lŏjĭk), seis′mo·logi·cal (-ĭ-kəl) adj.
seis′mo·logi·cal·ly adv.
seis·molo·gist n.
- by fits and starts
- by-form
- bygone
- by half
- by halves
- by hand
- by heart
- by hook or by crook
- by/in virtue of
- by Jove
- bylaw
- by leaps and bounds
- byline
- by-line
- byliner
- by means of
- by-name
- by no means
- BYOB
- by one's bootstraps
- by oneself
- by (one's) (own) bootstraps
- by one's own bootstraps
- by (or in)fits and starts
- by (or in) fits and starts