Definition

1. Noun:
   • A type of coral: A marine invertebrate animal (a polyp) that secretes a hard, calcareous (calcium carbonate) skeleton. Large colonies of these animals are the primary builders of coral reefs and atolls.

Usage

• The term "stony coral" is used to distinguish this major group of reef-building corals from other types, such as soft corals, which do not produce a rigid skeleton.
• It is commonly used in scientific, environmental, and scuba diving contexts when discussing reef formation, biology, or conservation.

Examples

• Noun:
  • The Great Barrier Reef is composed primarily of stony corals.
  • Scientists are studying the impact of ocean acidification on stony coral growth.
  • A diver must be careful not to touch the fragile stony coral.

Advanced Usage

• "Stony coral" as a modifier: The term can be used adjectivally to describe other nouns related to this coral type.
  • The reef exhibited a stunning variety of stony coral species.
  • Stony coral tissue loss disease is a serious threat to Caribbean reefs.

Variants and Related Words

• Scleractinian (n): The formal scientific name for an order of stony corals.
  • Scleractinians are also known as hexacorals because of their six-fold symmetry.
• Hard coral (n): A common synonym for "stony coral."
  • The identification guide focused on hard corals of the Pacific.
• Reef-building coral (n): A descriptive phrase often synonymous with "stony coral."
  • The conservation program aims to protect all reef-building corals in the area.

Synonyms

• Hard coral: Emphasizes the rigid skeleton.
• Reef coral: Highlights its ecological role in constructing reefs.
• Madreporarian coral: An older, less common scientific term.

Related Phrases

• Coral bleaching: A stress response where corals, including stony corals, expel their symbiotic algae, often leading to death.
  • The stony corals on this reef have experienced severe bleaching.
• Coral polyp: Refers to the individual animal that makes up a stony coral colony.
  • Each stony coral structure is a colony of thousands of tiny polyps.

Noun

1. corals having calcareous skeletons aggregations of which form reefs and islands