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
ALL IN FAVO(U)R OF THIS BRITISH VS. AMERICAN ENGLISH QUIZ
There's an ocean of difference between the way people speak English in the US vs. the UK. Are your language skills up to the task of telling the difference? Let's find out!
Question 1 of 7
True or false? British English and American English are only different when it comes to slang words.

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. 2023

How to use Plácido's disk in a sentence

FEEDBACK