Intrinsic (adjective)

1. Belonging naturally; essential or inherent.
2. Relating to the essential nature of something; inherent.
3. Relating to the inherent character or quality of something, rather than being imposed from outside.
4. Relating to the intrinsic factor, a substance in the gastric juice essential for the absorption of Vitamin B12.
5. Relating to a property or feature that is independent of external influences.

Origin:

Late 16th century: from latin intrinsecus "within", from intra "inside" + secus "on the side".

Examples:

1. The beauty of the sunset was an intrinsic part of the experience, making it all the more magical.
2. Her kindness was an intrinsic part of her personality, and something that endeared her to everyone she met.
3. The intrinsic value of the painting was inestimable, reflecting as it did the artist's unique vision and skill.
4. The intrinsic factor was essential for the proper functioning of the digestive system.
5. The intrinsic properties of the metal made it ideal for use in a wide range of applications.