year zero
noun
the beginning (1975) of the period during which Cambodia was under the control of the Khmer Rouge
the beginning of revolutionary change
the beginning of any new system or regime
Word Origin for year zero
C20: by analogy with
Year One of the French Revolutionary calendar
Words nearby year zero
yeanling,
year,
year in, year out,
year of confusion,
year of grace,
year zero,
year's mind,
year-around,
year-end,
year-round,
year-rounder