The Collaborative International Dictionary
Senonian
Senonian \Se*no"ni*an\, a. [F. s['e]nonien, from the district of S['e]nonais, in France.] (Geol.) In european geology, a name given to the middle division of the Upper Cretaceous formation.
Usage examples of "senonian".
The Etruscans and Umbrians agreed to make war against Rome, and called in the assistance of the Senonian Gauls.
The Cretaceous system, from the infra-Cretaceous Hauterivien to the Senonian, appears throughout the whole extent of Northern Bulgaria, from the summits of the Balkans to the Danube.