Lucidity (noun)

1. The state of being clear and easy to understand.
2. The quality of being easily understood or grasped; intelligibility.
3. The state of being mentally clear and able to think and reason well.

Origin:

The term "lucidity" comes from the latin word lucidus which means clear, bright, and shining. the word was formed by combining the prefix "lu-" meaning light, and the root word "-cidus" meaning clear.

Examples:

1. The teacher's explanation of the concept was marked by lucidity and precision.
2. The patient's lucidity was affected by the medications they were taking.
3. The speech was marked by lucidity and simplicity, making it easy for the audience to understand.
4. The author's writing style was characterized by lucidity and brevity.
5. The scientist's research paper was praised for its lucidity and logical flow of ideas.