Definition of "insertion" in English

noun

1. The act of inserting, or something inserted.

   • The surgeon performed the insertion of a pacemaker.
   • The insertion of new text changed the meaning of the document.
   • The book contained the insertion of several illustrations.

2. (anatomy) The distal end of attachment of a muscle to a bone that will be moved by the muscle.

3. (genetics) The addition of a nucleotide to a chromosome by mutation.

4. (atomic weapons) The process of going from subcritical to prompt critical.