- The act of exterminating; total destruction;
eradication; excision; as, the extermination of inhabitants or tribes,
of error or vice, or of weeds from a field. - Elimination.
Meaning of 'extermination' (Princeton's WordNet)
1 . extermination
[ n]
Meaning (1): - complete annihilation
Example in sentence:
they think a meteor cause the extinction of the dinosaurs