DISTINGUISHING, participle present tense 1. Separating from others by a note of diversity; ascertaining difference by a mark. 2. Ascertaining, knowing or perceiving a difference. 3. adjective Constituting difference, or distinction from every thing else; peculiar; as the distinguishing doctrines of Christianity.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI