Launch
What is Environment Variable?
A value stored outside your code, like an API key or database URL. Your code reads it at runtime so secrets never get committed to a repository.
Learn this term every day on iPhone.
One hand-written term. A real workplace example. Thirty seconds before your day gets loud.
In real work
Store the Claude API key as an environment variable in the secrets folder. Never hardcode it in a tutorial or a public repo.
How is this different from Googling it?
Google gives a definition. Prompthaus pairs each term with how it shows up in standups, PRs, prompts, and design reviews—then quizzes you until the word sticks. One term a day on iPhone.