Plácido's disk

[plah-si-dohz]

Origin of Plácido's disk

after A. Plácido da Costa (1848–1916), Portuguese ophthalmologist, who devised it
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

placido's disk in Medicine

Placido's disk

[plä-sēdōz]
n.
  1. keratoscope
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.