Medical Definition of Ray grass
1.
A perennial European grass (Lolium perenne).
Synonym: rye grass, and red darnel. See Darnel, and Grass. Italian ray, or rye, grass. See Darnel, and Grass.
Origin: Etymol. Of ray is uncertain.
Source: Websters Dictionary
(01 Mar 1998)
Lexicographical Neighbors of Ray Grass
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