Definition

1. Adjective:
   • Opaque, light-blocking: Describes a material or substance that does not allow light to pass through, preventing visibility.
   • Obstructing light: Refers to something that creates a barrier to light, causing shadow or darkness.

Usage Examples

• Adjective:
  • Tấm vải này rất cản quang, không nhìn xuyên qua được. (This fabric is very opaque, you cannot see through it.)
  • Cửa sổ được phủ một lớp sơn cản quang. (The window is coated with a light-blocking paint.)

Advanced Usage

• Technical/Scientific Context: Used to describe materials in physics, photography, or construction that block light transmission.
  • Kính cản quang được dùng trong phòng thí nghiệm. (Opaque glass is used in the laboratory.)

Variants and Related Words

• Cản: (verb) To block, hinder, or obstruct. This is the root verb.
• Quang: (noun) Light, brightness. This is the root noun.
• Chắn sáng: A near-synonymous phrase meaning "to block light."

Synonyms

• Mờ đục: Cloudy, turbid (often for liquids, but can imply opacity).
• Không trong suốt: Not transparent.

Notes on Usage

• "Cản quang" is a compound adjective formed from the verb cản (to block) and the noun quang (light). It is used attributively (before a noun) or predicatively (after a linking verb like "là" or "rất").
• It is a precise term. In everyday conversation, descriptive phrases like "không cho ánh sáng xuyên qua" (does not let light pass through) might be used instead.