Pronunciation

change

Singular
fathom

Plural
fathoms

  1. (countable) {{nautical (US) A fathom is a unit length that is equal to 6 feet.

Plain form
fathom

Third-person singular
fathoms

Past tense
fathomed

Past participle
fathomed

Present participle
fathoming

  1. (transitive) (figurative) If you fathom a waterbody, you measure the depth of it.