as·ter·o·seis·mol·o·gy 
(ăs′-tə-rō-sīz-mŏlə-jē)
(ăs′-tə-rō-sīz-mŏlə-jē)n.
The study of seismic waves propagating in a star, inferred from variations in stellar brightness.
[Greek astero-, relating to stars (from astēr, aster-, star; see ster-3 in the Appendix of Indo-European roots) + SEISMOLOGY.]
as′ter·o·seis′mo·logi·cal (-mə-lŏjĭ-kəl) adj.