Definition

1. Noun:
   • An organ that is situated on or near the surface of the body: An "external organ" is a bodily structure with a specific function that is located on the outside or outer part of the body, as opposed to internal organs.

Usage

• The term "external organ" is used in biological, anatomical, and medical contexts to classify and describe body parts. It is a formal, technical term.

Examples

• Noun:
  • The skin is the body's largest external organ.
  • Eyes and ears are considered external organs.
  • In some animals, antennae serve as important external sensory organs.

Advanced Usage

• The concept is often used in comparative anatomy to discuss the evolution and function of visible body structures.
  • The study focused on the development of external organs in crustaceans.

Variants and Related Words

• External (adj): Relating to, situated on, or connected with the outside or outer part.
  • External surface, external stimulus.
• Organ (n): A part of an organism that is typically self-contained and has a specific vital function.
• Internal organ (n): An organ situated inside the body. This is the direct antonym.

Synonyms

• Surface organ: A less common synonym emphasizing location.
• Peripheral organ: Sometimes used, particularly in specific technical contexts, to imply location away from the center.

Notes

• This is a compound noun. The primary meaning is derived directly from the combination of "external" and "organ." It does not commonly form phrasal verbs or idioms on its own.

Noun

1. an organ that is situated on or near the surface of the body