An approximate timescale of key Cenozoic events. Axis scale: Ma before present.. The Tertiary is a term for a geologic period 65 million to 1.8 million years ago.
http://en.wikipedia.org/wiki/Tertiary

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.
http://www.merriam-webster.com/dictionary/tertiary

tertiary adj. Third in place, order, degree, or rank. Of, relating to, or designating the short flight feathers nearest the body on the rear edge of
http://www.answers.com/topic/tertiary

Copy & paste this link to your blog or website to reference this page
http://dictionary.reference.com/browse/tertiary

ter·ti·ar·y (tûr sh-r) adj. 1. Third in place, order, degree, or rank. 2. Of, relating to, or designating the short flight feathers nearest the body on the rear edge of a bird's ...
http://www.thefreedictionary.com/tertiary