- Genetics a new hybrid produced by crossing two existing hybrids (A × B → AB, C × D → CD, AB × CD → ABCD)
- Informal a double-crossing; treachery
- double-crosser noun
Used by arrangement with John Wiley & Sons, Inc.
transitive verb dou·ble-crossed, dou·ble-cross·ing, dou·ble-cross·es
- often double cross An act of betraying an ally, a friend, or an associate.
- double cross Genetics A cross in which each parent is the product of a single cross. It can be represented as AB ˣ CD, where A, B, C, and D are inbred lines.
- douˈble-crossˈer noun