English
macroburst
From macro- + burst.
Proto-Indo-European *meh₂ḱ- ‘to increase’
Proto-Indo-European *mh₂ḱrós ‘lean, meager’
Proto-Hellenic *makrós
Ancient Greek μακρός ‘long’
English macro-
Proto-Germanic *brestaną ‘to burst, break, sunder, split, crack’
Proto-West Germanic *brestan ‘to burst, break, sunder, split, crack’
Old English berstan ‘to break, shatter, burst’
Middle English bresten ‘to break, smash’
English burst
Today it means
noun A strong downdraft, of over 2.5 miles in diameter, that can cause damaging winds.
Language periods are conventional ranges, not dates for this word.
Etymograph / macroburst