subordinationism
/səˌbɔːdɪˈneɪʃ(ə)nɪz(ə)m/ /səˌbɔːdɪˈneɪʃənɪz(ə)m/(also subordinatianism) Theology. Chiefly historical
noun
The doctrine that the second and third persons of the Trinity (the Son and the Holy Spirit) are inferior, in order or in essence, to the first (God the Father).
Origin
Mid 19th century. From subordination + -ism, after German Subordinatianismus.