Etymograph

English

retrosequence

From retro- + sequence.

Formed from retro- + sequence

Latin retrō ‘back, backwards, behind’

English retro-

Proto-Indo-European *sekʷ- ‘to follow’

…

Latin sequēns ‘following’

Late Latin sequentia ‘a following’

Old French sequence ‘a sequence of cards, answering verses’

Middle English sequence

English sequence

Today it means

noun A sequence of DNA produced by reverse transcription

Sources

Sources: Wiktionary, “retrosequence”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / retrosequence