one-way
adjective
- moving or allowing movement in one direction only: a one-way valve a one-way street
- (of a ticket) allowing a person to travel to a place but not back again; single.
- denoting a mirror or glass that acts as a reflective surface on one side but that is transparent from the other.
- denoting a relationship in which all the input comes from only one member: interaction between the organism and the environment is not a one-way process