insertion

1. The act of inserting, or something inserted. (countable, uncountable) · The surgeon performed the insertion of a pacemaker.· The insertion of new text changed the meaning of the document.
2. The distal end of attachment of a muscle to a bone that will be moved by the muscle. (countable, uncountable)
3. The addition of a nucleotide to a chromosome by mutation. (countable, uncountable)
4. The process of going from subcritical to prompt critical. (countable, uncountable)

الجمع insertions