S. glae(gal) n. “light (as an ethereal substance)” (Category: Light)
A word for light as an ethereal substance (“*photons”), the equivalent of Q. linquë though of different origin (NM/283); see the Quenya entry for further discussion. It appeared in the forms glae and glaegal, the former derived from the root √GLAY (perhaps a variant of √GAL¹ “light”), and the latter probably √GLAY + √KAL.
Conceptual Development: A similar form ᴱN. glaiw “light” appeared in Early Noldorin Word-lists of the 1920s (PE13/144).
References ✧ NM/283
|√glay > glae||[glai] > [glae]||✧ NM/283|