IPA: /ˌɛksoʊsaɪˈtoʊsɪs/
KK: /ɛksoʊsaɪˈtoʊsɪs/
A process in which substances inside small sacs in a cell are released to the outside of the cell by merging the sac's membrane with the cell's outer membrane.
During exocytosis, the cell releases hormones into the bloodstream.
Exocytosis → It is formed from "exo-" (meaning outside) and "kytos" (Greek for cell). The word describes the process of a cell expelling materials to the outside.
Think of a cell pushing materials 'outside' ('exo-') — that's what exocytosis means.