Definitions

1. noun

A prefix or abbreviation for ‘high-level’, often used in computing and technology, especially in acronyms such as HL7 (Health Level Seven) or HL-DTVP (High-Definition TV Plus).

“The software engineer worked on the HL-DTVP project to improve the quality of high-definition television broadcasts.”

2. interjection

An expression of surprise or excitement.

“Hl! What a great news!”

3. abbreviation

A shortened form of words such as ‘half-life’ or ‘high-level’.

“The HL of the radioactive material was 10 years.”

4. verb

To shine or emit light.

“The sun will hl through the clouds today.”