Definition of "del"

(mathematical analysis) The symbol ∇ used to denote the gradient operator.  examples

(mathematics) the symbol ∂, in the context of a partial differential  examples

(obsolete) a part, portion

Abbreviation of delegate.  examples

Abbreviation of delegation.  examples

Abbreviation of delete.  examples

abbreviation of delineavit as seen on published artwork, identifying the original artist. Commonly seen in books and articles on topics in natural history  examples