Definition of nonism:
(n) :
(philosophy) The denial of higher-level meaning beyond physical existence; materialism.
(n) :
The abstention from harmful activities, foods, and so on.
(n) :
(philosophy) The stance that the nature of reality is unknowable because all information comes through the senses, which are unreliable.
(n) :
(philosophy) The belief in the existence of entities and events within a domain that can only be defined in terms of what it is not.