From decrease +‎ -ing (participial suffix).

• IPA^(key): /diˈkɹiːsɪŋ/

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• Hyphenation: de‧creas‧ing
• Rhymes: -iːsɪŋ

decreasing (not comparable)

1. On the decrease.

• increasing

decreasing

1. present participle and gerund of decrease

decreasing (plural decreasings)

1. (knitting) A decrease.
   • 2016, Mrs. Beeton, Book of Needlework, page 54:

     The number of stitches between the decreasings decreases with every round, so that the decreasings form slanting lines meeting in a point.

• gradiences