What is "billennium"

Billennium may refer to:

• 2nd millennium, the second period of one thousand years in the Common Era
• 3rd millennium, the period of time which began with the year 2001
• Beretta 92 Billennium, a type of pistol
• Unix billennium, a point in Unix time which occurred in 2001
• "Billennium" (short story), a short story by J. G. Ballard

"Billenium" (or Billennium) is a short story by J. G. Ballard first published in the January 1962 edition of Amazing Stories (Volume 36, Number 1) and in the Billennium collection. It later appeared in The Terminal Beach (1964), and The Complete Short Stories of J. G. Ballard: Volume 1 (2006).

With a dystopian ambience, "Billennium" explores themes similar to Ballard's earlier story " The Concentration City", of space shortages and over-crowding.