Tertiary (disambiguation)

The Tertiary is a geologic period.

Tertiary (from Latin, meaning 'third' or 'of the third degree/order..') may also refer to:

Tertiary (chemistry), a term describing bonding patterns in organic chemistry
In biochemistry, the tertiary structure of a protein is its overall shape, also known as its fold
Tertiary consumer, in ecology
Tertiary feathers or tertials, feathers attached to humerus or inner portion of the wings of birds
Tertiary color, a color made up by mixing one primary color with one secondary color, in a given color space
Tertiary sector of the economy, or the service sector
Tertiary education, educational levels following the completion of secondary education such as university or trade school
Tertiary care, specialized consultative healthcare
Tertiary, a member of a third order religious group
Tertiary source, in research
Tertiary stress, a proposed level of stress in phonetics