Invisible boundary Synonyms

Definitions for Invisible


IB abbreviation

IB is an abbreviation for Invisible Boundary
What does IB stand for?
IB stands for "Invisible Boundary"

Definitions for Boundary


  • (noun) a real or imaginary point beyond which a person or thing cannot go
  • (noun) the line or relatively narrow space that marks the outer limit of something
  • (noun) the line or plane indicating the limit or extent of something