hybridization

Short definition from Wiktionary

Noun

1. 1
   The act of hybridizing, or the state of being hybridized: The linear combination of atomic orbitals in a molecule to form hybrid orbitals.
2. 2
   The act of hybridizing, or the state of being hybridized: The process of breeding a mixed offspring from two different strains or species of animal or plant
3. 3
   The act of hybridizing, or the state of being hybridized: The formation of double-stranded nucleic acid by complementary base-pairing
4. 4
   the conversion of a fleet of vehicles to hybrids.