Source : Webster's Revised Unabridged Dictionary (1913)

Barocyclonometer \Bar`o*cy`clon*om"e*ter\, n. [Gr. ? weight +
   cyclone + -meter.] (Meteorol.)
   An aneroid barometer for use with accompanying graphic
   diagrams and printed directions designed to aid mariners to
   interpret the indications of the barometer so as to determine
   the existence of a violent storm at a distance of several
   hundred miles.