ˈmīkrəˌsīzəm sometimes -sez- or -sāz- or -sēz- noun
( -s )
Etymology: International Scientific Vocabulary micr- + -seism
: a feeble rhythmically recurring earth tremor that is not directly perceptible, that is detected only by means of specially constructed apparatus, and that is caused by an earthquake or by a storm at sea — compare macroseism
• mi·cro·seis·mic | ̷ ̷ ̷ ̷|sī]zmik also ]sm- sometimes -|se] or -|sā] or -|sē]\ adjective