Definition

1. Adjective:

   • Shaped like a boat: Having a form that resembles the hull of a boat; specifically, describing a bone with a concave surface.

2. Noun:

   • A specific bone in the wrist or foot: In human anatomy, it refers to one of the carpal bones in the wrist (also called the scaphoid bone) or a tarsal bone in the foot.

Examples of Usage

• Adjective:

  • The navicular shape of the bone is clearly visible in the X-ray.
  • The geologist found a navicular fossil, curved like a small canoe.

• Noun:

  • A fracture of the navicular is a common wrist injury among athletes.
  • The podiatrist examined the patient's foot navicular for signs of stress.

Advanced Usage

• "Navicular disease": A specific, chronic lameness in horses, affecting the navicular bone and surrounding structures in the hoof.
  • The veterinarian diagnosed the horse with navicular disease.

Variants and Related Words

• Scaphoid (adj/n): A synonym, especially in medical contexts, for the navicular bone in the wrist.
  • Scaphoid fractures can be difficult to detect on initial X-rays.

Synonyms

• Adjective: Boat-shaped, cymbiform, scaphoid.
• Noun (for the wrist bone): Scaphoid bone, os scaphoideum.

Related Terms (Anatomical)

• Carpal bones: The group of eight small bones that make up the wrist, which includes the navicular (scaphoid).
• Tarsal bones: The group of seven bones in the foot, which includes the navicular bone.

Adjective

1. shaped like a boat

Noun

1. the largest wrist bone on the thumb side