noun, plural pte·ryg·i·ums, pte·ryg·i·a [tuh-rij-ee-uh] /təˈrɪdʒ i ə/. Ophthalmology.
Origin of pterygium
Examples from the Web for pterygium
Tension being made on the thread by an assistant, the operator sawed off the pterygium towards the apex by means of the horsehair.
Pterygium should be removed when advancing across the cornea, especially when the pupillary area is becoming involved.
Pterygium: a lateral expansion of the snout of some Coleoptera.Explanation of Terms Used in Entomology|John. B. Smith
Albucasis, who conveys entire the passage on pterygium from Paul, gives figures of both these instruments.
The base of the pterygium was then severed with the scalpel for the plastic operation on entropion.