Dam

Definition

A dam is a structure built across a river or stream to block or control the flow of water, creating a reservoir, lake, or pond. Dams are used for purposes such as water storage, flood control, irrigation, and generating hydroelectric power.

Parts of Speech

• Noun
• Verb

Pronunciation

American English

• IPA Pronunciation: /dæm/
• Respelling: dam

British English

• IPA Pronunciation: /dæm/
• Respelling: dam

The pronunciation of "dam" is the same in both American and British English.

Etymology

The word "dam" comes from the Middle Dutch word "dam," meaning "barrier." It was adopted into Old English in the 12th century, retaining its meaning as a structure that prevents the flow of water.

Derivatives

• Dam up (verb phrase)
• Dammed (adjective/verb)
• Damning (adjective)
• Undammed (adjective)
• Dam-builder (noun)

Synonyms

• Barrage
• Embankment
• Weir

Antonyms

• Release
• Flow
• Drain

Usage

The term "dam" is used primarily in environmental, engineering, and water management contexts. Dams are critical in providing water storage for irrigation, controlling flooding, and generating electricity through hydroelectric power plants. Dams are also used to create reservoirs for recreation and for regulating river flows in industrial areas.

Related Terms

• Reservoir: A large natural or artificial lake used to store water for human use.
• Hydroelectricity: Electricity generated by water power using dams.
• Flood control: Methods and structures, including dams, used to prevent flooding.

Detailed Definitions

Noun

• A structure built across a river or stream to block or control water flow: Refers to the physical construction used to manage water flow and create reservoirs.
  • Example: "The Aswan High Dam controls flooding and generates electricity in Egypt."

Verb

• To block or obstruct the flow of water: Describes the action of constructing a dam or obstructing a watercourse.
  • Example: "They dammed the river to prevent flooding in the valley."