Home updates Definitions of clopen - OneLook By Ava Bailey | Published April 07, 2026 We found 4 dictionaries that include the word clopen: General (1 matching dictionary)clopen: Wiktionary [home, info] Science (2 matching dictionaries)Clopen: Eric Weisstein's World of Mathematics [home, info]clopen: PlanetMath Encyclopedia [home, info] Slang (1 matching dictionary)clopen: Urban Dictionary [home, info]Definitions from Wiktionary (clopen)▸ adjective: (topology, of a set in a topological space) Both open and closed.▸ noun: A pair of work shifts in which a worker works a closing shift one day and then works an opening shift the following day.closed, open, disconnected, locally compact, discrete, path-connected, Kolmogorov, compact, second-countable, semiregular, more...▸ Words similar to clopen▸ Usage examples for clopen▸ Idioms related to clopen▸ Civic discussion about clopen (New!)▸ Popular adjectives describing clopen▸ Popular nouns described by clopen▸ Words that often appear near clopen▸ Rhymes of clopen▸ Invented words related to clopen