The Internet Moves in Packets
A packet is a small package. Networking took the word for the units into which all digital communication is broken.
A packet is a small parcel. Networking gave it a technical life: all internet traffic is broken into packets, each carrying its own address and travelling independently, to be reassembled at the destination. Packet switching was the key insight behind the internet, replacing the dedicated circuits used by telephone networks.
- A small package. *A packet of crisps.*
- A unit of network data. *A dropped packet.*
- A mail ship (historical). *The Falmouth packet.*
- Cost a packet — be expensive. *That cost a packet.*
Word forms
| Form | Word | Example |
|---|---|---|
| Noun | packet | A seed packet. |
| Plural | packets | Two packets. |
| Related | package | A wrapped package. |
| Related | pack | A pack of cards. |
| Compound | packet switching | Packet switching networks. |
How it is used in a sentence
- Packets may take different routes.And arrive out of order.
- That must have cost a packet.British: a lot of money.
- A packet boat carried mail.On a fixed schedule.
How packet switching works
- Splitting — a message is divided into numbered packets
- Independent routing — each packet finds its own path
- Reassembly — the destination reorders them
- Resilience — a failed link only forces rerouting, not disconnection
- Contrast — telephone networks used a dedicated circuit for each call
From Anglo-French *pacquet*, a diminutive of *pack*. Packet switching was developed independently in the 1960s in Britain and America.
Why is the internet packet-based?
Because splitting messages into independently routed packets makes the network resilient: no single path is essential.
What was a packet boat?
A vessel carrying mail and passengers on a fixed schedule, named because it carried the packets of official post.