mutation mutation /mjuːˈteɪʃən/

noun

1. A change or alteration in form or qualities  ( mutation )
   a change or alteration in form or qualities
   
2. (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organism  ( chromosomal mutation , genetic mutation , mutation )
   (genetics) any event that changes genetic structure; any alteration in the inherited nucleic acid sequence of the genotype of an organism
   
3. (biology) an organism that has characteristics resulting from chromosomal alteration  ( mutation , sport , variation , mutant )
   (biology) an organism that has characteristics resulting from chromosomal alteration