Why is the ninth month called September?
1660s, from Latin hyalinus, from Greek hyalinos "of glass or crystal," from hyalos "glass" (see hyalo-).
hyaline hy·a·line (hī'ə-lĭn, -līn')adj. Resembling glass, as in translucence or transparency; glassy. n.
Something that is translucent or transparent.
Variant of hyalin.