Homocentric

"Naturally, there exist three kinds of optical beams: parallel, divergent, and convergent (see Fig. 1.1.1). If a beam, either divergent or convergent, has a single point of intersection of all optical rays it is called a homocentric beam (Fig. 1.1.1b,c). An example of a non-homocentric beam is shown in Fig. 1.1.1 d."

"With this year's onslaught of homocentric networks, queer television programs for 2005 literally run the entire gay gamut."

"Hay's main concern, in the light of an antigreen backlash, is that homocentric democracy is insufficient for the achievement of the ecocentric goals[…]"