Ken appeared on the English horizon in the 16th century referring to the distance bounding the range of ordinary vision at sea (about 20 miles), and would thus have been familiar to skippers in particular. …

KEN definition: knowledge, understanding, or cognizance; mental perception. See examples of ken used in a sentence.

KEN definition: 1. not in your area of knowledge: 2. to know someone or something 3. not in your area of…. Learn more.

1. knowledge or understanding: an idea beyond one's ken. 2. range of sight or vision.

Dec 28, 2025 · In common usage a fossil word, found only in phrases such as beyond one’s ken and swim into one’s ken.

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7 meanings: 1. range of knowledge or perception (esp in the phrases beyond or in one's ken) 2. Scottish and Northern England.... Click for more definitions.

Ken definition: Perception; understanding.

The noun ken means "range of vision or comprehension." If quantum mechanics is beyond your ken, you don't understand it, or it is beyond your scope of knowledge. Ken is rarely used today outside of …

In this context, the phrase is infelicitous : ' beyond one's ken ', in its ordinary usage, means beyond one's powers of comprehension.