dc
Học thuậtThân thiện
Definition
- Noun:
- Direct current: An electric current that flows in one direction steadily.
- District of Columbia: The federal district of the United States, coextensive with the city of Washington, which serves as the national capital.
Usage Examples
Noun (Direct Current):
- This device runs on DC.
- Batteries provide DC power.
Noun (District of Columbia):
- Washington, D.C. is the capital of the United States.
- She lives in DC.
Advanced Usage
"DC power": Electrical power supplied as direct current.
- The solar panels generate DC power, which is then converted for home use.
"DC resident": A person who lives in the District of Columbia.
- As a DC resident, she votes for mayor but not for voting members of Congress.
Variants and Related Words
AC/DC (adj): A slang term meaning bisexual; also, in electronics, capable of operating on either alternating or direct current.
- The amplifier is an AC/DC model.
D.C. (n): An alternative punctuation for the District of Columbia.
- The letter was addressed to an office in Washington, D.C.
Synonyms
- Direct current: Unidirectional current, continuous current.
- District of Columbia: Washington, D.C., the Capital District, the Federal District.
Related Phrases
DC Comics (Proper Noun): A major American comic book publisher, named after "Detective Comics," whose headquarters were historically in the District of Columbia.
- Superman is a character from DC Comics.
DC motor (Noun): An electric motor that runs on direct current.
- The toy uses a small DC motor.
Notes on Usage
- When referring to the District of Columbia, the abbreviation is almost always capitalized as "DC" or "D.C." It is commonly used in addresses and informal writing.
- When referring to direct current, it is typically written in lowercase ("dc") in technical contexts, though it is often seen capitalized ("DC") for clarity, especially when contrasted with AC (alternating current).
- The two primary meanings are distinct and context-dependent. In sentences about electricity, "DC" means direct current. In sentences about geography or government, "DC" means the District of Columbia.
Noun
- an electric current that flows in one direction steadily
- the district occupied entirely by the city of Washington; chosen by George Washington as the site of the capital of the United States and created out of land ceded by Maryland and Virginia