Define: Arc

Arc (noun):

1. A curved line or shape that is part of a circle, typically formed by two points on the circumference and a section of the circumference between them.
Example: The rainbow is formed by the arc of sunlight refracting through water droplets in the air.

2. A continuous progression or development of events, ideas, or actions.
Example: The novel follows the arc of the protagonist’s journey from innocence to experience.

3. In mathematics, a portion of a curve that is defined by two endpoints and includes all the points between them.
Example: The arc of a parabola can be determined by its vertex and focus.

4. In architecture, a curved or pointed structure that spans an opening and supports weight above it, such as an arch.
Example: The Roman Colosseum is known for its impressive system of arches and arcs.

5. In storytelling, the narrative arc refers to the structure or shape of a story, including its beginning, middle, and end, as well as the rising and falling action.
Example: The plot of the movie follows a classic three-act arc, with an introduction, conflict, and resolution.

6. In computer graphics, an arc is a segment of a circle or ellipse that is drawn on a screen or display.
Example: The graphic designer used arcs to create a visually appealing logo for the company.

7. A luminous discharge of electricity that occurs when a current flows through a gas or vapor, creating a glowing, curved shape.
Example: The neon sign displayed a bright blue arc, attracting customers to the store.

8. A specific area or field of activity or expertise.
Example: She is a renowned expert in the arc of human psychology.

Note: The word “arc” can also be used as a verb, meaning to move or follow a curved path.