simplex meaning and definition

SIMPLEX adjective

Definition of simplex (adjective)

1. allowing communication in only one direction at a time, or in telegraphy allowing only one message over a line at a time
   • "simplex system"
2. having only one part or element
   • "a simplex word has no affixes and is not part of a compound--like `boy' compared with `boyish' or `house' compared with `houseboat'"