fathom

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See also: faþom

English

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Pronunciation

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Etymology 1

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From Middle English fathome, fadom, fadme (unit of length of about six feet; depth of six feet for nautical soundings; (loosely) cubit; ell) [and other forms],[2] from Old English fæþm, fæþme (encircling or outstretched arms, bosom, embrace; envelopment; control, grasp, power; fathom (unit of measurement); cubit) [and other forms], from Proto-West Germanic *faþm (outstretched arms, embrace; fathom (unit of measurement)), from Proto-Germanic *faþmaz (outstretched arms, embrace; fathom (unit of measurement)), from Proto-Indo-European *pet-, *peth₂- (to spread out; to fly).[3]

Noun

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fathom (plural fathoms)

  1. (chiefly nautical, historical, US) A man's armspan, generally reckoned to be six feet (about 1.8 metres). Later used to measure the depth of water, but now generally replaced by the metre outside American usage.
  2. (nautical, US) A measure of distance to shore: the nearest point to shore at which the water depth is the value quoted.
    After we'd rowed for an hour, we found ourselves stranded ten fathoms from shore.
  3. (figuratively)
    1. (chiefly in the plural) An unspecified depth.
    2. (archaic or obsolete) Depth of insight; mental reach or scope.
  4. (obsolete)
    1. The act of stretching out one's arms away from the sides of the torso so that they make a straight line perpendicular to the body.
    2. Someone or something that is embraced.
    3. (figuratively) Control, grasp.
Usage notes
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  • At sea, the fathom is exclusively a measure of water depth. Therefore, a boat that is 100 fathoms offshore is not 600 feet from the shore, but rather at the nearest point to shore where the water depth is 600 feet.
Synonyms
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Derived terms
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Translations
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See also
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Etymology 2

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From Middle English fathmen, fadmen (to encircle (something) with the arms, embrace; to feel, grope; to measure by the ell (or perhaps the fathom)) [and other forms],[4] from Old English fæðmian, from Proto-Germanic *faþmōjan, from *faþm (outstretched arms, embrace; fathom (unit of measurement)):[5] see further at etymology 1.

Verb

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fathom (third-person singular simple present fathoms, present participle fathoming, simple past and past participle fathomed)

  1. (transitive)
    1. (also figurative) To measure the depth of (water); to take a sounding of; to sound.
    2. (archaic or obsolete) To encircle (someone or something) with outstretched arms; specifically, to measure the circumference or (rare) length of something.
    3. (figurative) Often followed by out: to deeply understand (someone or something); to get to the bottom of.
      Synonyms: figure out, puzzle out, work out
      Coordinate term: grok
      I can’t for the life of me fathom what this means.
      • 2018 April 10, Daniel Taylor, “Liverpool go through after Mohamed Salah stops Manchester City fightback”, in The Guardian (London)[2]:
        Otamendi’s selection ahead of Vincent Kompany was difficult to fathom and, apart from Fernandinho, City’s line-up was otherwise filled with attacking players.
    4. (obsolete) To embrace (someone or something).
  2. (intransitive)
    1. To measure a depth; to sound.
    2. (figurative) To conduct an examination or inquiry; to investigate.
Derived terms
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Translations
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References

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  1. ^ Bingham, Caleb (1808) “Improprieties in Pronunciation, common among the people of New-England”, in The Child's Companion; Being a Conciſe Spelling-book [] [1], 12th edition, Boston: Manning & Loring, →OCLC, page 75.
  2. ^ fadme, n.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.
  3. ^ fathom, n.”, in OED Online Paid subscription required, Oxford, Oxfordshire: Oxford University Press, March 2022; fathom, n.”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
  4. ^ fadmen, v.”, in MED Online, Ann Arbor, Mich.: University of Michigan, 2007.
  5. ^ fathom, v.”, in OED Online Paid subscription required, Oxford, Oxfordshire: Oxford University Press, March 2022; fathom, v.”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.

Further reading

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