What does "extra" in "extra Calvinisticum" denote regarding Christ's divine nature?

The term "extra Calvinisticum" refers to a theological concept within Reformed traditions concerning the distinction between Christ's divine and human natures. The correct interpretation involves understanding that the divine nature of Christ exists independently of the human nature. This idea posits that while Jesus Christ is fully God and fully man, His divine nature does not become limited or altered by the human experience.

In this framework, “extra” indicates that His divine essence remains transcendently separate and unconfined by His human conditions or limitations. This distinction is crucial for affirming the integrity of both natures in the hypostatic union, highlighting that while Christ is fully human, His divinity extends beyond the confines of human experience. Therefore, the term captures the notion that His divine nature is not only greater but also distinct in function and essence from His human nature.

This understanding counters various theological positions that may suggest a fusion or subservience of one nature to the other, maintaining a clear boundary between divine sovereignty and human experience.