blow molding

blowing

[bloh-ing]
noun
  1. the sound of any vapor or gas issuing from a vent under pressure.
  2. Metallurgy. a disturbance caused by gas or steam blowing through molten metal.
  3. Also called blow molding. a method of producing hollowware by injecting air under pressure into a molten mass, as of glass or plastic, and shaping the material within a mold.

Origin of blowing

before 1000; Middle English, Old English; see blow2, -ing1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018