INTROGRESSION

n.[L. introgressio.] Entrance. [Not used. ]

INTROGRESSION

In `tro *gres "sion, n. Etym: [L. introgressus, p. p. of introgredi to go in; intro- within + gradi to step, go. ]

introgression

in tro gres sion |ˌintrəˈgreSHən ˌɪntrəˈɡrɛʃən | ▶noun Biology the transfer of genetic information from one species to another as a result of hybridization between them and repeated backcrossing. DERIVATIVES in tro gres sive |-ˈgresiv |adjective ORIGIN mid 17th cent.: from Latin introgredi ‘step in, ’ from intro- ‘to the inside ’ + gradi ‘proceed, walk, ’ on the pattern of egression, ingression .

introgression

introgression |ˌɪntrə (ʊ )ˈgrɛʃ (ə )n | ▶noun [ mass noun ] Biology the transfer of genetic information from one species to another as a result of hybridization between them and repeated backcrossing. DERIVATIVES introgressive adjective ORIGIN mid 17th cent.: from Latin introgredi ‘step in ’, from intro- ‘to the inside ’ + gradi ‘proceed, walk ’, on the pattern of egression, ingression .