Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Previous word: microsecond
Next word: microseismometer
Definition of: microseism
(mī′krə·sīz′əm) Geol.
A very slight tremor or vibration of the earth's crust, detectable only by a microseismometer. [<MICRO- + Gk. seisma shaking]
—mi′cro·seis′·mic, mi′cro·seis′mi·cal adjective
Comment about this word, ask questions, or add new information about this topic: