gassing

nouns

the process of interacting with gas
gassing
is a type of (narrower)
(chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
chemical action, chemical change, chemical process
the deliberate act of poisoning some person or animal with gas
gassing
is derived from
gas
is a type of (narrower)
the act of giving poison to a person or animal with the intent to kill
poisoning