A "natural high" that a sub gets during a scene or when being controlled.

state of mind and body, often like a trance or lucid dream state (some describe it as flying or drifting), often brought on by extreme sexual arousal caused by endorphins emitted during an intense scene or stress.

the alternate region of space that starships pass through while travelling at superluminal speeds.

The blissful mental state experienced by some submissives during and after a scene.

If is a space and is a subset of , then the subspace topology on induced by consists of all intersections of open sets in with . . A space is (or Kolmogorov) if for every pair of distinct points and in the space, either there is an open set containing but not , or there is an open set containing but not . . A space is (or accessible) if for every pair of distinct points and in the space, there is an open set containing but not . (Compare with T; here, we are allowed to specify which point will be contained in the open set.) Equivalently, a space is T if all its singletons are closed. T spaces are always T. . See Hausdorff. . See Regular Hausdorff. . See Tychonoff. . See Normal Hausdorff. . See Completely normal Hausdorff.

Subspace (also sub space), in the context of a BDSM scene, is the psychological state of the submissive partner. The term is unrelated to the mathematical term subspace.