Definition of microseismogram in US English:

microseismogram

noun

Geology
  • A seismogram generated artificially using sound waves within a borehole.

Origin

1970s; earliest use found in Geophysics. From micro- + seismogram.

Pronunciation

microseismogram

/ˌmʌɪkrə(ʊ)ˈsʌɪzməɡram/