nudism

[noo-diz-uh m, nyoo-]
noun
  1. the practice of going nude, especially in places that allow sexually mixed groups, in the belief that such practice benefits health.

Origin of nudism

First recorded in 1925–30; nude + -ism
Related formsnud·ist, noun, adjective
Can be confusednaturalist naturist nudist
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for nudism's

nudism

noun
  1. the practice of nudity, esp for reasons of health, religion, etc
Derived Formsnudist, noun, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for nudism's

nudism

n.

1929, from French nudisme (see nude + -ism). Nudist "one who practices nudism" appeared at the same time.

Made in Germany, imported to France, is the cult of Nudism, a mulligan stew of vegetarianism, physical culture and pagan worship. ["Time," July 1, 1929]
Online Etymology Dictionary, © 2010 Douglas Harper