sintering

/S IH1 N T ER0 IH0 NG/
verb
  1. 1

    To compact and heat a powder to form a solid mass.

noun
  1. 1

    A process in which the particles of a powder are welded together by pressure and heating to a temperature below its melting point

Source: https://en.wiktionary.org/wiki/sinter, https://en.wiktionary.org/wiki/sintering