Definition of "mutation" []

  • The act or process of being altered or changed. (noun)
  • An alteration or change, as in nature, form, or quality. (noun)
  • Genetics A change of the DNA sequence within a gene or chromosome of an organism resulting in the creation of a new character or trait not found in the parental type. (noun)
  • Genetics The process by which such a change occurs in a chromosome, either through an alteration in the nucleotide sequence of the DNA coding for a gene or through a change in the physical arrangement of a chromosome. (noun)
  • Genetics A mutant. (noun)
  • The act or process of mutating; change; alteration (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

  • A change or alteration (noun)
  • A change in the chromosomes or genes of a cell. When this change occurs in the gametes the structure and development of the resultant offspring may be affected (noun)
  • A physical characteristic of an individual resulting from this type of chromosomal change (noun)
  • (in Celtic languages) a phonetic change in certain initial consonants caused by a preceding word (noun) (c) HarperCollins Publishers Ltd 2016

Use "mutation" in a sentence
  • "No character whose development is dependent in greater or less degree on the stimulation of some substance derived from the gonads can have originated as a mutation, because the term mutation means a new character which develops in the soma as a result of the loss or gain of some factor or determinant in the chromosomes."
  • "Interestingly, the mutation is also associated with certain other negative physiological consequences."
  • "Hence, a psionic boy with telepathic powers due to his mutation is a science fiction character; but a prophet who reads the unspoken thoughts in the hearts of men due to a blessing from the elf-queen, is a fantasy character."