e/Extremally disconnected space

Information
has gloss	eng: In mathematics, a topological space is termed extremally disconnected or extremely disconnected if the closure of every open set in it is open. (The term "extremally disconnected" is usual, even though the word "extremally" does not appear in most dictionaries. )
lexicalization	eng: Extremally disconnected space
lexicalization	eng: Extremally-disconnected space
instance of	c/Properties of topological spaces