annuloid

A scientist examines an annuloid structure under a bright light.

Definition

1. Adjective:
   • Having the form of a ring or rings: "annuloid" describes something that is shaped like a ring or a series of rings.

Usage Examples

• Adjective:
  • The annuloid structure of the fossil suggested it was a type of ancient marine organism. (The fossil had a ring-like shape.)
  • The artist created an annuloid pattern in the sculpture, with circular bands wrapping around the core. (The pattern consisted of ring-shaped elements.)

Advanced Usage

• "annuloid formation": a geological or biological structure that appears as concentric rings.
  • The rock layers displayed an annuloid formation, indicating periodic sediment deposition. (The layers formed ring-like patterns.)

Variants and Related Words

• Annular (adj): ring-shaped; similar in meaning but more common.
  • The annular eclipse occurs when the moon covers the center of the sun, leaving a ring of light. (Ring-shaped eclipse.)
• Annulation (n): the process or result of forming a ring or rings.
  • The annulation of the coral reef created a circular barrier. (The formation of a ring structure.)

Synonyms

• Ring-shaped: having the form of a circle or ring.
• Circular: shaped like a circle; though not always implying a ring with a hole.

Related Idioms

• None directly associated with "annuloid." The term is technical and rare in idiomatic usage.