what is hybridization 

In chemistry , hybridisation (or hybridization ) is the concept of mixing atomic orbitals to form new hybrid orbitals suitable for the qualitative description of atomic bonding properties. Hybridised orbitals are very useful in the explanation of the shape of molecular orbitals for molecules . It is an integral part of valence bond theory . Although sometimes taught together with the valence shell electron-pair repulsion (VSEPR) theory , valence bond and hybridization are in fact not related to the VSEPR model. ^...!!@@!!

 The process of combining different varieties of organisms to create a hybrid is called hybridisation. 

(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids