Japanese edit

For pronunciation and definitions of あんてん – see the following entries.
暗転
[noun] dimming, taking a turn for the worse
[verb] to dim, to take a turn for the worse
暗点
[noun] scotoma, scotomatous
(This term, あんてん, is the hiragana spelling of the above terms.)

(The following entry is uncreated: 暗天.)