GNU Collaborative International Dictionary of English

last match results

Found 2 definitions

1.       
   Del (?), n. [See Deal, n.] Share; portion; part. [Obs.] Chaucer.
   
   [1913 Webster]
   
   
         
       

2.       
   del n. (Math.) a differential operator which, operating on a function of several variables, gives the sum of the partial derivatives of the function with respect to the three orthogonal spatial coordinates; -- also called the gradient or grad.  It is represented by an inverted Greek capital delta (∇), and is thus because of its shape also called nabla, meaning harp in Hebrew.
   
   [PJC]