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iso·bront
variants:
or less commonly isobronton \ -äntᵊn , ˌ⸗⸗ˈ⸗⸗ , ˌ⸗⸗ˈbrän‧ˌtän \
Definition of isobront
: a line on a chart marking the simultaneous development of a thunderstorm at different points on the earth's surface
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