Definitions:

1. A small container, envelope, or wrapped bundle used to hold items or substances, especially for individual portions. NOUN
   • She opened a packet of sugar.
2. A small, sealed amount of a product, often single-use. NOUN
   • Packet of seeds.
3. In computing context, is a small unit of data sent over a network, such as the internet. NOUN
   • When you send an email, it's broken into packets that travel across the internet.

Synonyms:

• data unit
• envelope
• Pouch
• Sachet
• segment