English Reference

Word

SSH

UK/ˌɛsˌɛsˈeɪtʃ/

Definition

n. Stands for Secure Shell. A secure way to connect one computer to another over the internet so you can control it safely.

n. Abbreviation for Secure Shell. A cryptographic network protocol used for secure data communication, remote command-line login, and remote command execution.

Examples

“I use SSH to log into my work computer from home.”

“The system administrator used SSH to securely access the server and update the software without exposing the password to the network.”

“By utilizing public-key authentication over SSH, developers can establish a secure, encrypted tunnel that protects sensitive data transfers from potential man-in-the-middle attacks on unsecured networks.”

Examples

simple

“I use SSH to log into my work computer from home.”

contextual

“The system administrator used SSH to securely access the server and update the software without exposing the password to the network.”

complex

“By utilizing public-key authentication over SSH, developers can establish a secure, encrypted tunnel that protects sensitive data transfers from potential man-in-the-middle attacks on unsecured networks.”

Usage

Often used as an uncountable noun when referring to the protocol itself.

Real-World Examples

“Reviews in the social sciences and humanities (SSH) averaged 928 words, compared with 748 in life sciences (LS) and 716 in mathematics, informatics, natural sciences and technology (MINT).”
Phys.org · 24 Sept 2026

Etymology

An initialism for Secure Shell, coined in 1995 by Tatu Ylönen. It was developed as a replacement for earlier, unencrypted protocols such as Telnet and rlogin.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Synonyms

Secure Shell

Domain

Networking

This entry

Level
C2 · Proficiency
Updated
Register
Technical

Scan code

englishreference.com/q/ssh

English Reference