tro·mom·e·ter \trōˈmäməd.ə(r)\noun Etymology: Greek tromos trembling (akin to Greek tremein to tremble) + English -meter — more at tremble : an instrument for measuring or detecting minute earth tremors • trom·o·met·ric\|tramə|me.trik\ortrom·o·met·ri·cal\-rə̇kəl\adjective • tro·mom·e·try\trōˈmämə.trē\noun-es