'Slowing' definitions:

Definition of 'slowing'

From: WordNet
noun
A decrease in rate of change; "the deceleration of the arms race" [syn: deceleration, slowing, retardation] [ant: acceleration]

Definition of 'Slowing'

From: GCIDE
  • Slow \Slow\, v. t. [imp. & p. p. Slowed; p. pr. & vb. n. Slowing.] To render slow; to slacken the speed of; to retard; to delay; as, to slow a steamer. --Shak. [1913 Webster]