1906, "millenarianism, belief in the coming or presence of the (Christian) millennium," from millennial + -ism. Related: Millennialist.
Entries linking to millennialism
millennial adj.
1660s, "pertaining to the millennium," from stem of millennium + -al (1). Meaning "pertaining to a period of 1,000 years" is from 1807. As a noun from 1896, originally "a thousandth anniversary." From 1991 as a generational name for those born in the mid-1980s and thus coming of age around the year 2000.
-ism
word-forming element making nouns implying a practice, system, doctrine, etc., from French -isme or directly from Latin -isma, -ismus (source also of Italian, Spanish -ismo, Dutch, German -ismus), from Greek -ismos, noun ending signifying the practice or teaching of a thing, from the stem of verbs in -izein, a verb-forming element denoting the doing of the noun or adjective to which it is attached. For distinction of use, see -ity. The related Greek suffix -isma(t)- affects some forms.