Meaning of year zero | Babel Free

Definitions

1. a non-existing (but often assumed) year in between 1 BCE/BC and 1 CE/AD
   literally, uncountable
2. the beginning of the Common Era/Christian Era
   broadly, uncountable

Examples

“The new millennium only began in 2001 because there is no year zero!”

“What was life in Rome like around the year zero?”

CEFR level