poly·cross
ˈpälē,
-lə̇+ˌ-
: 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)
"
: produced by a polycross
polycross seed
: producing polycrosses
polycross nursery
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Merriam-Webster unabridged
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