1. Emit or transmit: Radiate can refer to the emission or transmission of energy, heat, or light from a central point or source. For example, the sun radiates heat and light, or a hot object radiates heat.

2. Spread or diffuse: Radiate can also mean to spread or diffuse from a central point or source. For instance, news can radiate throughout a community, or happiness can radiate from a person.

3. Display or express: Radiate can be used to describe the display or expression of qualities, emotions, or characteristics. For example, someone might radiate confidence, joy, or intelligence.

4. Diverge like rays: In geometry and physics, radiate can refer to the divergence of lines, rays, or waves from a central point, similar to the spokes of a wheel.

Examples:

- The sun radiates energy in the form of heat and light.

- Her smile radiates warmth and kindness.

- News of the accident radiated quickly through the town.

- The cracks radiated from the center of the broken plate.

The specific meaning of radiate depends on the context in which it is used.