semigloom en · NOUN
Etymology
From semi- + gloom.
Meanings
-
(uncountable) Partial gloom or darkness.
The room was in semigloom, for Scarlett had pulled down the shades to shut out the heat and brightness.
1936 June 30, Margaret Mitchell, Gone with the Wind, New York, N.Y.: The Macmillan Company, published June 1944, →OCLC, part IV, page 367: