excavation of optic disk
The normally occurring depression or pit in the center of the optic disk.physiologic excavation
PogChampRead more in this article about some frequently asked questions and fun facts related to our definitions.
What’s Nuclear About A Football?Whose nuclear launch button is bigger? There has been a serious kerfuffle in the news about buttons and their relative size. Specifically, nuclear launch buttons. Kim Jong-un, the leader of North Korea, flatly stated that a nuclear button is on his desk at all times. “It’s not a mere threat but a reality that I have a nuclear button on the desk in my office.” …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.