noun
(mathematical analysis) The symbol ∇ used to denote the gradient operator.
(mathematics) the symbol ∂, in the context of a partial differential
noun
(obsolete) a part, portion
noun
Abbreviation of delegate.
Abbreviation of delegation.
verb
Abbreviation of delete.
verb
abbreviation of Latin delineavit as seen on published artwork, identifying the original artist. Commonly seen in books and articles on topics in natural history