BCE stands for

Concept

BCE and CE are the two halves of the secular (religion-neutral) calendar-era system used in historical dating. BCE marks the years before year 1 of this era, and CE marks year 1 onward; the numbering matches the older BC/AD system exactly but replaces the Christian-specific labels with neutral terms tied to a "Common Era" shared across cultures.

Application

Expanding the abbreviation letter by letter — B = Before, C = Common, E = Era — gives "Before Common Era": the label for every year before year 1 of the Common Era, exactly mirroring how "BC" marks years before year 1 in the older system.

Contrast with the other options

• "Before Christian Era" reinstates the religion-specific wording that the neutral BCE notation was introduced to replace.

• "Before Caesar Era" invents an era named after a person; standard chronological terminology recognises no such era.

• "Before Contemporary Era" substitutes an informal, present-tense-sounding phrase; "contemporary" is not part of the recognised calendar-era name.