outcross

O1U1T1C3R1O1S1S1

noun

The introduction of unrelated breeding stock to an existing population, especially one which is inbred or homogeneous.

RareFirst used 19th c.Scrabble 10

Meanings

nounoutcross (plural outcrosses)

plural outcrosses · alternative out-cross

  1. The introduction of unrelated breeding stock to an existing population, especially one which is inbred or homogeneous.First known use 19th c.

    Their two sons, Joseph I and Charles VI went still further in their pursuit of an out-cross by both marrying princesses from the Guelph house of Brunswick.

    2007, Tim Blanning, The Pursuit of Glory, Penguin, published 2008, page 249
  2. A plant or animal produced by such methods.First known use 20th c.
verboutcross (third-person singular simple present outcrosses, present participle outcrossing, simple past and past participle outcrossed)

present singular third person outcrosses · participle present outcrossing · participle past outcrossed · past outcrossed · alternative out-cross

  1. transitiveto crossbreed different strains of a plant or animal.First known use 20th c.

Synonyms & antonyms

Opposite

Origin

  1. Proto-Indo-European*úd
  2. Proto-Germanic*ūt
  3. Proto-Germanic*ūt-
  4. Old Englishūt-
  5. Middle Englishut-
  6. Englishout-
  7. Proto-Indo-European*(s)ker-der.?
  8. Proto-Italic*kruks /*krukis
  9. Latincrux
  10. Old Irishcros
  11. Old Norsekross
  12. Old Englishcros
  13. Middle Englishcross
  14. Englishcross
  15. Englishoutcross

From out- + cross.

Full word history & related roots →

Rhymes & wordplay

Anagrams

Cite this entry
APA

outcross. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/outcross

MLA

“outcross.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/outcross. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “outcross,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/outcross.

Source: outcross on Wiktionary, CC BY-SA 4.0.