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Webster 1913 Edition

Noun.

(Med.)

The belief or doctrine that attributes everything to nature as a sanative agent.

naturism ‎(countable and uncountable, plural naturisms)

The belief in or practice of going nude in social settings, often in mixed-gender groups, specifically either in cultures where this is not the norm or for health reasons.
The belief or doctrine that attributes everything to nature as a sanative agent.

the belief in or practice of going nude or unclad

the belief or doctrine that attributes everything to nature as a sanative agent