As nouns the difference between dimness and semidarkness
is that dimness is the state of being dim, poorly illuminated, almost dark while semidarkness is partial or near darkness, dimness, twilight.
dimness
English
Noun
The state of being dim, poorly illuminated, almost dark.
Anagrams
*
semidarkness
English
Alternative forms
* semi-darkness
Noun
(-)
Partial or near darkness, dimness, twilight.
Related terms
* semidark