Phagocytosis

Absorption and, if necessary, degradation of endogenous or foreign cells, cell parts, microorganisms and other corpuscles by phagocytes (macrophages and to a lesser extent neutrophils granulocytes).

The active uptake of inanimate or animate particles into the interior of a cell for the purpose of food intake (e.g. in amoebae) or for the elimination of foreign elements after they have been labelled with antibodies, above all as a mechanism of non-specific infection defence by phagocytes, i.e. by importing (without altering the shape of the cell) and flowing around them.

https://de.wikipedia.org/wiki/Phagocytose _{(Wikipedia CC-by-sa-3.0)}