optical binaries

• plural

  plural

  The grammatical form denoting more than one person, place, thing, or idea.

  of optical binary.
  optical binary

  noun

  a pair of stars that appear close together when observed from Earth, but which are not actually close in physical space.

More Suggestions

• optical fibre
• optical art
• optical bench
• optical center
• optical density
• optical fiber
• optical glass
• optical isomer
• optical maser