Discern | Definition of discern by Merriam-Webster

Definition of DISCERN

transitive verb

1

a : to detect with the eyes <discerned a figure approaching through the fog>

b : to detect with senses other than vision <discerned a strange odor>

2

: to recognize or identify as separate and distinct : discriminate <discern right from wrong>

3

: to come to know or recognize mentally <unable to discern his motives>

intransitive verb

: to see or understand the difference

— dis·cern·er noun

— dis·cern·ible also dis·cern·able \-ˈsər-nə-bəl, -ˈzər-\ adjective

— dis·cern·ibly \-blē\ adverb

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Examples of DISCERN

A careful analysis of the “Nutrition Facts” panels might provide some guidance, but you would have to do a lot of math before you could discern the best choice. —David L. Katz, O, The Oprah Magazine, August 2008
The ability to discern value at a glimpse, to sift the useful out of the rejected with as little expenditure of energy as possible, is the great talent of the scavenger. —Matthew Power, Harper's, December 2006
Astronomers are delighted to have found 19 galaxies that appear to be bent out of shape. The distorted images are cosmic mirages, arcs or rings of light created when the gravity of a massive foreground object bends and magnifies the light from a galaxy lying behind it. Albert Einstein predicted the effect … in 1936, but telescopes at the time weren't powerful enough to discern it. —R. Cowen, Science News, 21 Jan. 2006
Despite the layers of ironic hesitation, the reader soon discerns that the emotions informing the book are raw and, more importantly, authentic. —Publishers Weekly, 13 Dec. 1999
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Origin of DISCERN

Middle English, from Middle French discerner, from Latin discernere to separate, distinguish between, from dis- apart + cernere to sift — more at dis-, certain

First Known Use: 14th century