Definition

Noun: * The capitate bone: A specific carpal (wrist) bone. It is the largest bone in the distal row of the carpus (the row of wrist bones closest to the hand). It is characterized by its rounded, head-like shape on one end, which articulates (forms a joint) with the base of the third metacarpal bone (the long bone in the palm leading to the middle finger).

Usage Notes

• Medical/Anatomical Term: "Os capitatum" is the formal Latin anatomical term. In common English medical and anatomical usage, it is more frequently called the capitate bone or simply the capitate.
• Context: This term is used almost exclusively in anatomical, medical, surgical, or radiographic contexts when describing the structure of the wrist, injuries (like fractures), or conditions (like arthritis).

Examples of Usage

• Noun:
  • An X-ray revealed a fracture of the os capitatum.
  • The os capitatum articulates with the third metacarpal bone.
  • In the dissection, we identified the os capitatum as the largest carpal bone in the distal row.

Advanced Usage

• "Capitate" as an adjective: The word "capitate" itself is an adjective meaning "having a head" or "head-shaped." This describes the bone's morphology. Therefore, "os capitatum" literally translates to "the head-shaped bone."

Variants and Related Words

• Capitate (noun): The standard English synonym for "os capitatum."
  • The capitate is a key stabilizer of the wrist.
• Capitate (adjective): Describing a head-like shape.
  • The flower has a capitate inflorescence.

Synonyms

• Capitate bone
• Capitate
• (an older, less common synonym)

Related Anatomical Terms (Not Synonyms)

• Carpals: The general category of eight wrist bones, of which the os capitatum is one.
• Metacarpals: The five long bones of the palm. The os capitatum connects to the third metacarpal.
• Hamate, Triquetrum, Lunate: Names of other, adjacent carpal bones.

Noun

1. the wrist bone with a rounded head shape that articulates with the 3rd metacarpus