Definition

1. Noun:
   • A type of synovial joint: A "cotyloid joint" is a freely moving joint in which a spherical or rounded head of one bone fits into a cup-like cavity of another bone, allowing for a wide range of motion.

Usage

• The term "cotyloid joint" is a technical anatomical term. It is used in medical, biological, and scientific contexts to describe a specific joint structure.
• It is synonymous with the more common terms "ball-and-socket joint" or "spheroidal joint."

Examples

• Noun:
  • The hip is a classic example of a cotyloid joint.
  • The shoulder is another major cotyloid joint in the human body.

Advanced Usage

• "Cotyloid" as an adjective: The word "cotyloid" itself is an adjective meaning cup-shaped. It is often used to describe the socket part of such a joint (e.g., the cotyloid cavity of the hip bone).

Variants and Related Words

• Ball-and-socket joint (n): The common, non-technical term for a cotyloid joint.
• Spheroidal joint (n): An alternative technical term for this joint type.
• Enarthrosis (n): Another, less common, technical synonym for a cotyloid joint.
• Acetabulum (n): The specific name for the cup-shaped socket of the hip joint (a cotyloid cavity).

Synonyms

• Ball-and-socket joint
• Spheroidal joint
• Enarthrosis

Antonyms

• Hinge joint: A joint that allows motion primarily in one plane (e.g., elbow, knee).
• Pivot joint: A joint that allows rotational movement around a single axis (e.g., the joint between the first and second vertebrae).
• Gliding joint: A joint that allows only sliding or gliding movements (e.g., joints between carpal bones).

Noun

1. a freely moving joint in which a sphere on the head of one bone fits into a rounded cavity in the other bone