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Definition of: fathom
(fath′əm) noun plural ·oms or ·om
A measure of length, 6 feet, or 1.829 meters: used principally in marine and mining measurements.
—v.t.
1. To find the depth of; sound.
2. To get to the bottom of; understand; interpret. [OE fthm the span of two arms outstretched]
—fath′om·a·ble adjective
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