Dictionary.com

Plácido's disk

[ plah-si-dohz ]
/ ˈplɑ sɪˌdoʊz /
Save This Word!

noun Ophthalmology.
a device marked with concentric black rings, used to detect corneal irregularities.
QUIZ
QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of Plácido's disk

After A. Plácido da Costa (1848–1916), Portuguese ophthalmologist, who devised it

Words nearby Plácido's disk

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use Plácido's disk in a sentence

Medical definitions for Plácido's disk

Placido's disk
[ plä-sēdōz ]

n.
keratoscope
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
FEEDBACK