That does not block or obstruct; (Computing, of a device or system) such that its use does not prevent another user or device from using it at the same time; allowing concurrent operation.
Origin
Early 20th century; earliest use found in The New York Times. From non- + block + -ing.
Definition of nonblocking in US English:
nonblocking
adjectivenɒnˈblɒkɪŋ
That does not block or obstruct; (Computing, of a device or system) such that its use does not prevent another user or device from using it at the same time; allowing concurrent operation.
Origin
Early 20th century; earliest use found in The New York Times. From non- + block + -ing.