<p><strong>Adjective</strong></p><ul><li>Of the third order, rank, stage, formation, etc.; third.</li><li>Chemistry: noting or containing a carbon atom united to three other carbon atoms.</li><li>Formed by replacement of three atoms or groups.</li><li>Geology: noting or pertaining to the period forming the earlier part of the Cenozoic Era, occurring from 65 million to 2 million years ago, characterized by the development and proliferation of mammals.</li><li>Ornithology: tertial.</li><li>Ecclesiastical: noting or pertaining to a branch, or third order, of certain religious orders that consists of lay members living in community (regular tertiaries) or living in the world (secular tertiaries).</li></ul><p><strong>Noun</strong></p><ul><li>Tertiaries: the Tertiary Period or System.</li><li>Ornithology: a tertial feather.</li><li>Ecclesiastical: a member of a tertiary branch of a religious order.</li><li>Tertiary color.</li></ul><p><strong>End of Response</strong></p>