first, earliest or original / (biology) characteristic of the earliest stage of the development of an organism, or relating to a primordium / primeval

A first principle or element.

The quality of being primordial.

In a primordial manner. / With regard to a primordium.

plural of primordialism

Devotion to, or persistence in, conditions of the primordial state.

plural of primordial

plural of primordiality

(archaic) primordial

(informal, evolutionary theory) The state of the Earth's oceans at a very early time in the planet's history, during the early development of multicellular organisms.