| Placidyl |
ethchlorvynol: a mild sedative-hypnotic drug (trade name Placidyl)
Ãâó: wordnet.princeton.edu/perl/webwn
|
|---|---|
| Placido's d. |
a keratoscope.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
|
| Placido's disk |
[Antonio Placido, Portuguese ophthalmologist, 1848?1916] A disk marked with concentric black and white circles used in determining the amount and character of corneal irregularity.
Ãâó:
|