What is the Meaning & Definition of tertiary

The tertiary term can indicate different situations...
A recurrent use of the word is as a qualifying adjective to account for that or what is third degree or order. Get new clients at the moment is a tertiary concern for the company, mainly, today are aimed to keep in the best way that we have.
On the other hand, at the behest of the architecture, tertiary, is the name given to the stone arch that is made in the domes formed by cruise ships.
With regard to religious orders, the tertiary is therefore in religion, religious or secular, regular or secular that belongs to the third order of some religious orders, for example, Franciscan tertiary, belonging to the order of San Francisco, the tertiary Dominican, who is a member of the order of Santo Domingo.
And geology, with the tertiary term is hereinafter referred to everything what is proper or is linked to the oldest geological epoch or the Cenozoic era.
The tertiary is a period which began 65 million back, moment in which the dinosaurs became extinct and that the continents moved to positions that currently occupy. Is in this period that stands alpino-andino folding (gave rise to the Cordillera de Los Andes and the Swiss Alps), the union of North America and South America, through Central American bridge and a significant volcanic activity. The landscape of this period is similar to that currently surrounds us, plants with flowers, birds, and the diversification of mammals with the aforementioned extinction of dinosaurs appeared.