subspace

/ˈsʌbˌspeɪs/
noun
  1. A space that is part of a larger space, especially in mathematics or physics.
    • In linear algebra, a subspace is a set of vectors that is closed under addition and scalar multiplication.
    • The mathematician proved that the set of all polynomials of degree less than three forms a subspace of the vector space.
    • Physicists sometimes model a region of spacetime as a subspace of the universe.
  2. In science fiction, a hidden or alternate dimension used for faster-than-light travel or communication.
    • The starship entered subspace to travel across the galaxy in minutes.
    • They sent a message through subspace to warn the colony of the approaching danger.
    • In the show, subspace is a mysterious realm that exists outside normal space.
  3. A smaller, distinct area or category within a larger system or field.
    • The company created a new subspace of products for eco-friendly consumers.
    • The study of marine biology is a subspace of the broader field of biology.
    • In the gaming community, speedrunning has become its own subspace with dedicated fans.
What does "subspace" mean? | whatsthatwordmean | whatsthatwordmean