1 of 2


: a cross in which the female parent is known but the male may belong to any of several available strains and which is used in the production of new lines of some economic plants (as alfalfa)


2 of 2


: produced by a polycross
polycross seed
: producing polycrosses
polycross nursery

Word History



poly- + cross

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near polycross

Cite this Entry

“Polycross.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polycross. Accessed 17 Jun. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!