Bottom-up (adjective)

1. Design or organization that is built from the smallest or most basic elements to the larger or more complex ones.
2. A method or approach that begins with analyzing individual parts or elements before considering the whole.

Origin:

The term bottom-up is derived from the idea of building something from the bottom level to the top, as opposed to top-down which is building from the top level to the bottom.

Examples:

1. In a bottom-up approach, we start with the small details and gradually build them into a larger whole.
2. The bottom-up design of this software allows users to easily add new features to the system.
3. The bottom-up method of teaching grammar focuses on individual words and phrases before moving on to larger structures.
4. In a bottom-up approach to problem-solving, we begin by identifying specific problems and then work our way up to addressing the larger issue.
5. The bottom-up approach to budgeting starts with determining the costs of individual items before determining the total budget.