electric-discharge lamp
C2Technical/Scientific
Definition
Meaning
A lamp that produces light by passing an electric current through a gas or vapor, causing it to glow.
A broad category of lighting devices including fluorescent lamps, neon signs, sodium-vapor lamps, and metal-halide lamps, where light is generated not by heating a filament but by exciting a gas or plasma with electricity.
Linguistics
Semantic Notes
This is a hypernym (umbrella term) for several specific lamp types. It contrasts with 'incandescent lamp' (which uses a heated filament). The term is often used in engineering, physics, and lighting design contexts.
Dialectal Variation
British vs American Usage
Differences
No significant lexical difference. Spelling follows regional norms (e.g., 'colour' vs. 'color' in surrounding text). The hyphen is standard in both.
Connotations
Neutral technical term in both varieties.
Frequency
Equally low-frequency and specialized in both dialects. More common in written technical manuals and academic papers than in speech.
Vocabulary
Collocations
Grammar
Valency Patterns
[electric-discharge lamp] + [verb: operates, uses, contains, emits][Adjective] + [electric-discharge lamp][Preposition: in, with, by] + [electric-discharge lamp]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None. This is a technical compound noun.”
Usage
Context Usage
Business
Used in procurement, facility management, or sustainability reports discussing lighting efficiency.
Academic
Common in physics, engineering, and environmental design papers comparing lighting technologies.
Everyday
Virtually never used. A layperson would say 'fluorescent light' or 'neon sign'.
Technical
Standard term in electrical engineering, lighting design specifications, and technical manuals.
Examples
By Part of Speech
verb
British English
- The circuit is designed to discharge electrically within the lamp.
- We need to discharge the lamp safely before servicing.
American English
- The system electrically discharges to illuminate the lamp.
- Always discharge the lamp before handling.
Examples
By CEFR Level
- This big light is called an electric-discharge lamp.
- Many street lights are electric-discharge lamps because they use less energy.
- Compared to traditional bulbs, an electric-discharge lamp, such as a fluorescent tube, offers superior luminous efficacy.
- The stadium's retrofit involved replacing all metal-halide fixtures with next-generation, pulse-start electric-discharge lamps to improve colour rendering and longevity.
Learning
Memory Aids
Mnemonic
Think: ELECTRICity DISCHARGES inside the lamp to make light, unlike a bulb that just heats a wire.
Conceptual Metaphor
LIGHT IS A CONTAINED STORM (electric discharge resembles miniature lightning inside a tube).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque 'электрический-разрядный лампа'. The correct Russian term is 'газоразрядная лампа' (gas-discharge lamp).
- Do not confuse with 'электролампа' (electric lamp), which is a broader term.
Common Mistakes
- Misspelling as 'electric discharge lamp' (without hyphen). The hyphen is standard for this compound noun.
- Using it in everyday conversation where a simpler term ('fluorescent light') is appropriate.
- Confusing it with 'LED lamp', which is a solid-state device, not a gas-discharge device.
Practice
Quiz
What is the primary distinction of an electric-discharge lamp?
FAQ
Frequently Asked Questions
No. LED (Light Emitting Diode) lamps are solid-state lighting devices. Electric-discharge lamps require a gas or vapor to be ionized by an electrical current.
Common examples include fluorescent tubes (common in offices), compact fluorescent lamps (CFLs), neon signs, sodium-vapor street lights, and metal-halide lamps (used in stadiums and warehouses).
The hyphen links 'electric' and 'discharge' to form a single compound modifier for 'lamp'. It clarifies that the discharge is electrical, not some other kind, and that the term is a specific technical noun.
In many applications, yes. More efficient and durable technologies like LEDs are replacing them due to even better energy efficiency, longer lifespan, and lack of hazardous materials like mercury (found in some discharge lamps).