1 nabla | Definition of nabla

nabla

noun
nab·​la | \ ˈnablə\
plural -s

Definition of nabla

1 : an ancient stringed instrument probably like a Hebrew harp of 10 or 12 strings

— called also nebel

2 [ probably so called from the resemblance of its symbol, the inverted Greek delta, to a harp ] : del

History and Etymology for nabla

Greek, of Semitic origin; akin to Hebrew nēbhel harp

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