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 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 refer to part ...
(of roughly triangular shape)
*
''Nabla'' (moth), a genus of moths
*
Nabla (instrument)
The nevel or nebel ( he, נֵבֶל ''nēḇel'') was a stringed instrument used by the Israelites. The Greeks translated the name as ''nabla'' (νάβλα, "Phoenician harp").
A number of possibilities have been proposed for what kind of inst ...
, the Greek word for a Phoenician or Hebrew stringed instrument after the triangular shape of which all of the above are named
{{disambiguation