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noun, often attributive wa·ter \ˈwȯ-tər, ˈwä-\

Simple Definition of water

  • : the clear liquid that has no color, taste, or smell, that falls from clouds as rain, that forms streams, lakes, and seas, and that is used for drinking, washing, etc.

  • : an area of water (such as a lake, river, or ocean)

  • waters : a specific area of water; especially : an area of seawater

Source: Merriam-Webster's Learner's Dictionary

Full Definition of water

  1. 1 a :  the liquid that descends from the clouds as rain, forms streams, lakes, and seas, and is a major constituent of all living matter and that when pure is an odorless, tasteless, very slightly compressible liquid oxide of hydrogen H2O which appears bluish in thick layers, freezes at 0° C and boils at 100° C, has a maximum density at 4° C and a high specific heat, is feebly ionized to hydrogen and hydroxyl ions, and is a poor conductor of electricity and a good solvent b :  a natural mineral water —usually used in plural

  2. 2 :  a particular quantity or body of water: as a (1) plural :  the water occupying or flowing in a particular bed (2) chiefly British :  lake, pond b :  a quantity or depth of water adequate for some purpose (as navigation) c plural (1) :  a band of seawater abutting on the land of a particular sovereignty and under the control of that sovereignty (2) :  the sea of a particular part of the earth d :  water supply <threatened to turn off the water>

  3. 3 :  travel or transportation on water <we went by water>

  4. 4 :  the level of water at a particular state of the tide :  tide

  5. 5 :  liquid containing or resembling water: as a (1) :  a pharmaceutical or cosmetic preparation made with water (2) :  a watery solution of a gaseous or readily volatile substance — compare ammonia water b archaic :  a distilled fluid (as an essence); especially :  a distilled alcoholic liquor c :  a watery fluid (as tears, urine, or sap) formed or circulating in a living body d :  amniotic fluid; also :  bag of waters

  6. 6 a :  the degree of clarity and luster of a precious stone b :  degree of excellence <a scholar of the first water>

  7. 7 :  watercolor

  8. 8 a :  stock not representing assets of the issuing company and not backed by earning power b :  fictitious or exaggerated asset entries that give a stock an unrealistic book value

above water
  1. :  out of difficulty

Examples of water in a sentence

  1. Would you like a glass of water?

  2. There's water dripping from the ceiling.

  3. The kids love playing in the water.

  4. A stick was floating on the water.

  5. They like to vacation near the water.

  6. We are sailing in international waters.

  7. They were fishing in Canadian waters.

Origin of water

Middle English, from Old English wæter; akin to Old High German wazzar water, Greek hydōr, Latin unda wave

First Known Use: before 12th century

Other Chemical Engineering Terms

Rhymes with water



verb wa·ter

Simple Definition of water

  • : to pour water on (something, such as a plant)

  • : to give (an animal) water to drink

  • of the eyes : to produce tears

Source: Merriam-Webster's Learner's Dictionary

Full Definition of water

  1. transitive verb
  2. 1 :  to moisten, sprinkle, or soak with water <water the lawn>

  3. 2 :  to supply with water for drink <water cattle>

  4. 3 :  to supply water to <lands watered by the river>

  5. 4 :  to treat with or as if with water; specifically :  to impart a lustrous appearance and wavy pattern to (cloth) by calendering

  6. 5 a :  to dilute by the addition of water —often used with down <water down the punch> b :  to add to the aggregate par value of (securities) without a corresponding addition to the assets represented by the securities

  7. intransitive verb
  8. 1 :  to form or secrete water or watery matter (as tears or saliva)

  9. 2 :  to get or take water: as a :  to take on a supply of water <the boat docked to water> b :  to drink water

Examples of water in a sentence

  1. We need to water the lawn.

  2. They fed and watered the horses in the barn.

  3. My eyes were watering as I chopped the onions.

Before 12th Century

First Known Use of water

before 12th century

WATER Defined for Kids



noun wa·ter \ˈwȯ-tər, ˈwä-\

Definition of water for Students

  1. 1 :  the liquid that comes from the clouds as rain and forms streams, lakes, and seas

  2. 2 :  a body of water or a part of a body of water



verb wa·ter

Definition of water for Students


  1. 1 :  to wet or supply with water <I'm watering the plants.>

  2. 2 :  to fill with liquid (as tears or saliva) <… Papa and the judge laughed until their eyes watered. — Wilson Rawls, Where the Red Fern Grows>

  3. 3 :  to add water to <Someone watered down the punch.>

Seen and Heard

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