1. In mathematics and computer science:
* Functional programming: A programming paradigm where programs are constructed by composing pure functions. Pure functions are functions that always produce the same output for the same input and have no side effects. This makes code more predictable, easier to test, and often easier to reason about.
2. In design:
* Functional design: An approach to design that emphasizes functionality and usability over aesthetics. It focuses on making objects or systems work effectively and efficiently.
3. In general use:
* Functional: Working correctly and as intended. For example, "The car is fully functional" or "The website is not functional."
* Functional: Something that is practical and serves a purpose. For example, "The new office building is very functional."
4. In psychology:
* Functional analysis: A behaviorist approach that focuses on understanding how behaviors are learned and maintained. It involves identifying the antecedents (triggers) and consequences (reinforcers) of behaviors.
5. In biology:
* Functional genomics: The study of how genes and proteins function within living organisms. It aims to understand the role of genes and proteins in biological processes.
To understand the meaning of "functional" in a specific context, it's important to consider the surrounding information and the subject matter being discussed.