Definition

Noun: A sun-ray lamp is a type of mercury-vapor lamp designed to emit ultraviolet radiation, primarily used for therapeutic or cosmetic purposes. It simulates some effects of natural sunlight.

Usage

The term "sun-ray lamp" is a compound noun. It refers specifically to the device itself. It is used in contexts related to medical therapy, dermatology, or personal care.

Examples

• The dermatologist recommended brief sessions under a sun-ray lamp to treat the skin condition.
• Some tanning beds use a type of sun-ray lamp.
• For vitamin D synthesis in controlled settings, a sun-ray lamp may be employed.

Advanced Usage

• The term is technical and specific. In everyday conversation, people might use broader terms like "UV lamp" or "tanning lamp," though these are not exact synonyms.
• It is often found in instructional manuals for medical or cosmetic equipment.

Variants and Related Words

• Sunlamp (noun): A common shorter variant with the same meaning.
• Ultraviolet lamp (noun): A more general term for lamps emitting UV light, which may include but is not limited to sun-ray lamps.
• Phototherapy lamp (noun): A lamp used for light therapy, which can encompass sun-ray lamps.

Synonyms

• Artificial sunlight lamp (noun)
• UV therapy lamp (noun)

Notes on Meaning

• The core meaning combines the source of radiation ("sun-ray," implying ultraviolet light similar to sunlight) and the device producing it ("lamp").
• Its use is almost exclusively for applications where controlled exposure to ultraviolet light is intended, distinguishing it from general-purpose lighting.

Noun

1. a mercury-vapor lamp used in medical or cosmetic treatments