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noun \ˈgrān\

Simple Definition of grain

  • : the seeds of plants (such as wheat, corn, and rice) that are used for food; also : a single seed of wheat, corn, rice, etc.

  • : a plant that produces grain

  • : a small, hard piece of something

Source: Merriam-Webster's Learner's Dictionary

Full Definition of grain

  1. 1 a (1) obsolete :  a single small hard seed (2) :  a seed or fruit of a cereal grass :  caryopsis b :  the seeds or fruits of various food plants including the cereal grasses and in commercial and statutory usage other plants (as the soybean) c :  plants producing grain

  2. 2 a (1) :  a small hard particle or crystal (2) :  any of the particles produced in a photographic material by its development; also :  the size of such grains in the aggregate (3) :  an individual crystal in a metal b :  a minute portion or particle c :  the least amount possible <a grain of truth>

  3. 3 a :  kermes or a scarlet dye made from it b :  cochineal or a brilliant scarlet dye made from it c :  a fast dye d archaic :  color, tint

  4. 4 a :  a granulated surface or appearance b :  the outer or hair side of a skin or hide

  5. 5 :  a unit of weight based on the weight of a grain of wheat taken as an average of the weight of grains from the middle of the ear — see weight table

  6. 6 a :  the stratification of the wood fibers in a piece of wood b :  a texture due to constituent particles or fibers <the grain of a rock> c :  the direction of threads in cloth

  7. 7 :  tactile quality

  8. 8 a :  natural disposition :  temper <lying goes against my grain> b :  a basic or characteristic quality c :  a prevalent ideology or convention <teaching against the grain>


play \ˈgrānd\ adjective



Examples of grain in a sentence

  1. bread made from whole wheat grain

  2. The machine grinds grain into flour.

  3. The farm grows a variety of grains.

  4. Anyone with a grain of sense knows that she's lying.

  5. There is not a grain of truth in what he said.

Origin and Etymology of grain

Middle English, partly from Anglo-French grain cereal grain, from Latin granum; partly from Anglo-French graine seed, kermes, from Latin grana, plural of granum — more at corn

First Known Use: 14th century

Other Seed Plant Terms




Definition of grain

  1. transitive verb
  2. 1 :  ingrain

  3. 2 :  to form into grains :  granulate

  4. 3 :  to paint in imitation of the grain of wood or stone

  5. 4 :  to feed with grain

  6. intransitive verb
  7. :  to become granular :  granulate




First Known Use of grain


GRAIN Defined for Kids


noun \ˈgrān\

Definition of grain for Students

  1. 1 :  the edible seed or seeds of some grasses (as wheat, corn, or oats) or a few other plants (as buckwheat)

  2. 2 :  plants that produce grain

  3. 3 :  a small hard particle <a grain of sand>

  4. 4 :  a tiny amount <a grain of truth>

  5. 5 :  a unit of weight equal to 0.0648 gram

  6. 6 :  the arrangement of fibers in wood


\ˈgrānd\ adjective

Medical Dictionary


noun \ˈgrān\

Medical Definition of grain

  1. 1a:  a seed or fruit of a cereal grassb:  the seeds or fruits of various food plants including the cereal grasses and in commercial and statutory usage other plants (as the soybean)c:  plants producing grain

  2. 2:  a small hard particle or crystal (as of sand or salt)

  3. 3:  a unit of avoirdupois, Troy, and apothecaries' weight equal to 0.0648 gram or 0.002286 avoirdupois ounce or 0.002083 Troy ounce—abbreviation gr

Seen and Heard

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a dwelling place or home

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