Hypostatic /(?)/

Hy·po·stat·ic

Hypostatic

a.
  1. Relating to hypostasis, or substance; hence, constitutive, or elementary.
    The grand doctrine of the chymists, touching their three hypostatical principles.
  2. Personal, or distinctly personal; relating to the divine hypostases, or substances.
  3. Depending upon, or due to, deposition or setting; as, hypostatic cognestion, cognestion due to setting of blood by gravitation. (Med.)

Phrases & Compounds
Hypostatic union
the union of the divine with the human nature of Christ.