Definition
User interface (UI) is the visual and interactive elements that users interact with in a product. Founders reach for it when a vague conversation needs a shared, specific meaning. Name it clearly, then let the next decision — a hire, a price, a test, or a pass — follow from that meaning.
In the room
How the word shows up in a real conversation.
You know User interface (UI) is doing work when it changes a weekly choice — price, hire, channel, or kill. The working definition: Visual and interactive elements that users interact with in a product.
Common mistake
Using User interface (UI) as a label instead of a fact. If you cannot point to the evidence — a number, a customer, or a written assumption — you are using the word as jargon.
See also
User Acquisition
Process of attracting and converting new users to a product or service.
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User acquisition cost
Total cost of acquiring a new user, including marketing and sales expenses.
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User demographics
Statistical characteristics of users, such as age, gender, income, and location.
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User engagement
Level of interaction and involvement users have with a product or service.
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