What does variational mean?
Variational is a formal adjective meaning connected with, characterized by, or involving variation. It is especially common in scientific and mathematical language, where it describes principles, methods, models, equations, or parameters that account for changes or differences. In statistics, variational inference refers to a family of methods for approximating complex probability distributions. In biology, variational terminology concerns differences among individuals or traits within a population. The word is related to variation and variable, but it is not simply a synonym for either: a variable is something that can take different values, while variation is the difference or range of differences itself. Variational describes the idea, a method, or a principle based on those differences. Although less usual in everyday conversation, it is useful in formal writing because it clearly signals a discussion of change, variability, or the relationships among different possibilities.
adjectiveCharacterized by, consisting of, or relating to variation; differing in some respect.
- Relating to, characterized by, or involving variation.
- Relating to differences among individuals or traits within a population, especially in biology.
"The researchers used a variational model to account for differences in the population's traits."
"The variational approach identified several factors that could influence the model's results."
"Variation in flowering time was associated with genetic and environmental differences among the plants."
In physics, the variational principle turns a complicated question into a search for the path that makes an action stationary.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
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How variational is actually used
Variational is a formal and often technical adjective, especially common in mathematics, physics, statistics, and biology. It is more specific and less conversational than words such as varied or variable.
Easily confused with variational
Variable describes something that can change or is capable of taking different values, whereas variational relates to variation or to methods that use variation.
Variation is a noun referring to a difference or range of differences, while variational is the adjective describing something connected with such variation.