/ Dictionary / Index T transposon: Meaning and Definition of Find definitions for: trans•po•son Pronunciation: (trans-pō'zon), [key] — Genetics. Genetics. a segment of DNA that is capable of inserting copies of itself into other DNA sites within the same cell. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: transposon (Thesaurus) transposition cipher transracial Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language