Chaulk vs. Chalk - What's the difference?


Alternative spelling of chalk.


Chalk ( ) is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Calcite is an ionic salt called calcium carbonate or CaCO3. It forms under reasonably deep marine conditions from the gradual accumulation of minute calcite shells (coccoliths) shed from micro-organisms called coccolithophores. Flint (a type of chert) is very common as bands parallel to the bedding or as nodules embedded in chalk. It is probably derived from sponge spicules or other siliceous organisms as water is expelled upwards during compaction. Flint is often deposited around larger fossils such as Echinoidea which may be silicified (i.e. replaced molecule by molecule by flint). Chalk as seen in Cretaceous deposits of Western Europe is unusual among sedimentary limestones in the thickness of the beds. Most cliffs of chalk have very few obvious bedding planes unlike most thick sequences of limestone such as the Carboniferous Limestone or the Jurassic oolitic limestones. This presumably indicates very stable conditions over tens of millions of years. Chalk has greater resistance to weathering and slumping than the clays with which it is usually associated, thus forming tall steep cliffs where chalk ridges meet the sea. Chalk hills, known as chalk downland, usually form where bands of chalk reach the surface at an angle, so forming a scarp slope. Because chalk is well jointed it can hold a large volume of ground water, providing a natural reservoir that releases water slowly through dry seasons.

Chaulk vs. Chalk


1. Etymology

See chalk.

2. Pronunciation

  • (General American) IPA(key): /tʃɑk/
  • (Received Pronunciation) IPA(key): /tʃɔːk/

3. Noun

chaulk (countable and uncountable, plural chaulks)

  1. (obsolete, now only nonstandard, rare) Alternative spelling of chalk

4. Verb

chaulk (third-person singular simple present chaulks, present participle chaulking, simple past and past participle chaulked)

  1. (obsolete, now only nonstandard, rare) Alternative spelling of chalk

5. Anagrams

  • kulcha


1. Alternative forms

  • chaulk (dated)

2. Etymology

From Old English cealc, borrowed from Latin calx (limestone), borrowed from Ancient Greek χάλιξ (khálix, pebble)

3. Pronunciation

  • (Received Pronunciation) IPA(key): /t͡ʃɔːk/
  • (General American) enPR: chôk, IPA(key): /t͡ʃɔk/
  • (cotcaught merger, northern cities vowel shift) IPA(key): /t͡ʃɑk/
    • Homophone: chock
  • Rhymes: -ɔːk

4. Noun

chalk (countable and uncountable, plural chalks)

  1. (uncountable) A soft, white, powdery limestone.
  2. (countable) A piece of chalk, or, more often, processed compressed chalk, that is used for drawing and for writing on a blackboard.
  3. Tailor's chalk.
  4. (uncountable, climbing) A white powdery substance used to prevent hands slipping from holds when climbing, sometimes but not always limestone-chalk.
  5. (US, military, countable) A platoon-sized group of airborne soldiers.
  6. (US, sports, chiefly basketball) The prediction that there will be no upsets, and the favored competitor will win.

5. Verb

chalk (third-person singular simple present chalks, present participle chalking, simple past and past participle chalked)

  1. To apply chalk to anything, such as the tip of a billiard cue.
  2. To record something, as on a blackboard, using chalk.
  3. To use powdered chalk to mark the lines on a playing field.
  4. (figuratively) To record a score or event, as if on a chalkboard.
  5. To manure (land) with chalk.
    (Can we find and add a quotation of Mortimer to this entry?)
  6. To make white, as if with chalk; to make pale; to bleach.
    (Can we find and add a quotation of Tennyson to this entry?)
    • Herbert
      Let a bleak paleness chalk the door.
  • calcium
  • calx
  • chalkboard

6. See also

  • chalk on Wikipedia.Wikipedia
  • Chalk (disambiguation) on Wikipedia.Wikipedia
  • Chalk (military) on Wikipedia.Wikipedia
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