W

/'dʌblju:/

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Thân thiện

Definition

Noun:
- The 23rd letter of the modern English alphabet: It is a consonant, written in uppercase as "W" and lowercase as "w".
- A unit of power in physics: A watt, equal to one joule of energy per second or the power dissipated by a current of one ampere across a resistance of one ohm.
- A cardinal direction: Abbreviation for "west", the compass point at 270 degrees.
- A chemical element: The symbol for tungsten (also called wolfram), a heavy, grey-white metallic element used primarily in electrical applications and found in ores like wolframite and scheelite.

Usage Examples

As a letter:
- The word "water" begins with a w.
- She wrote her name with a cursive capital W.
As a unit of power:
- This light bulb uses 60 W of power.
- The amplifier's output is rated at 100 W.
As a direction:
- The map indicated a mountain range to the W.
- Head W on this road for five miles.
As a chemical symbol:
- Tungsten, symbol W, has a very high melting point.
- The filament in an incandescent bulb is often made of W.

Advanced Usage

In abbreviations: Often used as an abbreviation in various contexts.
- WWW: World Wide Web.
- W/: An informal abbreviation for "with".
In digital/text communication: Used to represent "win" or "with".
- GG W! (Good game, win!)
- Coffee w cream, please.

Variants and Related Words

Double-u: The name of the letter "W", originating from its visual representation as a double "U".
Watt (W): The full term for the unit of power.
West: The full word for the cardinal direction.
Tungsten / Wolfram: The full names for the chemical element.

Synonyms

West: For the directional meaning.
Watt: For the unit of power (though this is the full term, not a true synonym).
Tungsten: For the metallic element.

Related Phrases and Initialisms

Notes on Usage

When used as a letter, it is pronounced /ˈdʌb.əl.juː/ ("double-u").
In scientific contexts (physics, chemistry), "W" is always written in uppercase as a symbol.
As a directional abbreviation, it is often written with a period (W.) in formal contexts like maps or addresses.

Noun

the 23rd letter of the Roman alphabet
a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm
the cardinal compass point that is a 270 degrees
a heavy grey-white metallic element; the pure form is used mainly in electrical applications; it is found in several ores including wolframite and scheelite

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