Something that's distinguishable can be detected or observed, especially as being separate or different from something else. The one chocolate sea salt doughnut in the box will be easily distinguishable from the plain doughnuts.

In some people with color blindness, red isn't distinguishable from green — in other words, it can't be perceived as a different, separate color. You might complain that the policies of your city's new mayor, despite her promises, are barely distinguishable from those of her predecessor. The verb distinguish is at the heart of this adjective, and it comes from the Latin distinguere, "to separate between."

Definitions of distinguishable

adj capable of being perceived as different or distinct

“only the shine of their metal was distinguishable in the gloom”
“a project distinguishable into four stages of progress”
distinguishable differences between the twins”
capable of being perceived as different
capable of being discriminated
indistinguishable, undistinguishable
not capable of being distinguished or differentiated

adj (often followed by `from') not alike; different in nature or quality

unlike in nature or quality or form or degree

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