/ˌjuːnɪmɪsɪv/ or /ˌjuːnɪmɪsɪv/ (UK) or /ʌnɪmɪsɪv/ (US)

Definitions

1. adjective

Having or showing a tendency to release or emit something, especially a gas, less easily or slowly than usual.

“The unemissive paint used for the space station had to be applied with a special brush.”