different between multicast vs multicasting

English

multiple broadcast

multicast (not comparable)

(programming, of a delegate) Having multiple targets, such that a call to the delegate triggers a call to each target.
- 2005, Jesse Liberty, Programming C#: Building .NET Applications with C#
  The result is a new multicast delegate that invokes both of the original implementing methods.

multicast (plural multicasts)

(computing) The simultaneous transmission of data to several destinations on a network.

Blend of multiple +? broadcasting

multicasting (countable and uncountable, plural multicastings)

(computing) The simultaneous transmission of data to several destinations on a network

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