What does the word periphery mean?

Usage examples for periphery

  1. At that moment Professor Gasgabelaus, the temporary chairman, a huge man, the periphery of whose abdomen rivalled the circumference of the " working terrestrial globe" at the other end of the platform, pounded perspiringly with his gavel and announced that the conference would adjourn until the following Monday morning. – The Man Who Rocked the Earth by Arthur Train Robert Williams Wood
  2. Before the aperture is formed, it is already possible to distinguish on the surface of the parenchyma numerous channels radiating from the point at which the osculum will be formed to the periphery of the young sponge. – Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale
  3. Finally I decided I could skirt the periphery if I was careful not to advertise my presence. – Life Blood by Thomas Hoover