# Semi-Arianism

> English word · Noun

## Definitions
1. A fourth-century-CE Trinitarian heresy in the Christian church, claiming that the Son was "like" the Father but not of the same substance (homoiousian).

## Etymology
From semi- + Arian + -ism.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/semi-arianism