Nabla may refer to any of the following: * the

nabla symbol The nabla symbol The nabla is a triangular symbol resembling an inverted Greek delta:Indeed, it is called ( ανάδελτα) in Modern Greek. \nabla or ∇. The name comes, by reason of the symbol's shape, from the Hellenistic Greek word ...

∇ ** the vector differential operator, also called

del Del, or nabla, is an operator used in mathematics (particularly in vector calculus) as a vector differential operator, usually represented by the nabla symbol ∇. When applied to a function defined on a one-dimensional domain, it denotes ...

, denoted by the nabla * Nabla, tradename of a type of

rail fastening system A rail fastening system is a means of fixing Rail profile, rails to railroad ties (North America) or sleepers (British Isles, Australasia, and Africa). The terms ''rail anchors'', ''tie plates'', ''chairs'' and ''track fasteners'' are used to r ...

(of roughly triangular shape) * ''Nabla'' (moth), a genus of moths *

Nabla (instrument) The nevel, nebel ( ''nēḇel''), was a stringed instrument used by the Phoenicians and the Israelites. The Greeks translated the name as ''nabla'' (νάβλα, "Phoenician harp").Athenaeus, ''Deipnosophistae'4.174/ref> A number of possibilities ...

, the Greek word for a Phoenician stringed instrument after the triangular shape of which all of the above are named, reported as "nebel/nevel" in Hebrew sources. *

Ranjan Daimary Ranjan Daimary alias D.R. Nabla (Ransaigra Nabla Daimary) is the founder president of the armed separatist outfit National Democratic Front of Boroland. Daimary initially founded a militant group named Bodo Security Force in October 1986. Later, ...

or D. R. Nabla, an Indian militant

See also