/ɛdɪ/ or /hædi/ (UK) or /ˈhɑdi/ (US)

Definitions

1. noun

A high definition or an abbreviation for high definition.

“The movie was released in both sd and hd formats.”

2. verb

To head or to lead.

“The team hd the competition, winning the championship title.”

3. prefix

A prefix indicating high definition or high-density.

“hd camera for professional photography.”

4. adjective

Having a high definition or high-density.

“The hd television provided crisp and clear images.”