Definition

Noun: A topical substance, typically a cream or lotion, applied to the skin to protect it from the harmful effects of the sun's ultraviolet (UV) rays by absorbing, reflecting, or scattering the light.

Usage

"Sun blocker" is used to refer to a product whose primary function is to prevent sunburn and other skin damage caused by UV radiation. It is often used interchangeably with "sunscreen," though some technical distinctions exist.

Examples

• Noun:
  • Don't forget to apply sun blocker before going to the beach.
  • This sun blocker has a high SPF for maximum protection.
  • She keeps a bottle of sun blocker in her car at all times.

Advanced Usage

• The term "sun blocker" is sometimes used to specifically describe physical sunscreens (or mineral sunscreens) that work primarily by creating a physical barrier on the skin to block and scatter UV rays, often containing ingredients like zinc oxide or titanium dioxide. This contrasts with "sunscreen," which can also refer to chemical sunscreens that absorb UV radiation.

Variants and Related Words

• Sunscreen (n): A very close synonym, often used interchangeably with "sun blocker."
• Sunblock (n): A common compound word variant with the same meaning.
• Sun cream (n): A synonym, more common in British English.
• SPF (Sun Protection Factor) (n): A numerical rating on sun blockers indicating the level of protection against UVB rays.
• Broad-spectrum (adj): A description for sun blockers that protect against both UVA and UVB rays.

Synonyms

• Sunscreen
• Sunblock
• Sun cream
• Sun lotion

Related Phrases

• To apply sun blocker: The standard phrase for putting it on the skin.
  • You should reapply sun blocker every two hours.
• SPF rating: Refers to the Sun Protection Factor number.
  • What SPF rating does your sun blocker have?

Noun

1. a cream spread on the skin; contains a chemical (as PABA) to filter out ultraviolet light and so protect from sunburn