n.
Pronunciation: in- ' s ə r-sh ə n
Function: noun
Date: 1539
1 : something that is inserted: as a : the part of a muscle that inserts b : the mode or place of attachment of an organ or part c : embroidery or needlework inserted as ornament between two pieces of fabric d : a section of genetic material that is inserted into an existing gene sequence
2 a : the act or process of inserting b : the mutational process producing a genetic insertion
– in · ser · tion · al \ -shn ə l, -sh ə -n ə l \ adjective