'Isobront' definitions:

Definition of 'Isobront'

From: GCIDE

Isobront \I"so*bront\ ([imac]"s[-o]*br[o^]nt), n. [Iso- + Gr. bronth` thunder.] (Meteor.) An imaginary line, or a line on a chart, marking the simultaneous development of a thunderstorm, as noted by observing the time when the thunder is heard at different places. [Webster 1913 Suppl.]