concrete
/ˌkɑnˈkɹit/ adjective B2- Real, actual, tangible. · Fuzzy videotapes and distorted sound recordings are not concrete evidence that Bigfoot exists.· Once arrested, I realized that handcuffs are concrete, even if my concept of what is legal wasn't.
- Analogous to the categories of algebraic objects which category theory was created to generalize, in the sense of having objects which can be thought of as sets equipped with some additional structure. Formally, equipped with a faithful functor to the category of sets.
- Equipped with a faithful functor to X (called a base category), in which case C is called a concrete category over X.
- Being or applying to actual things, rather than abstract qualities or categories.
- Particular, specific, rather than general. · concrete ideas
- Made of concrete (building material). · The office building had concrete flower boxes out front.
Comparative concreter · Superlative concretest
From the library
Marilla was not to be drawn from the safe concrete into dubious paths of the abstract.
Since it never snows in Jamaica, they had to practice on concrete.
Outside my window, the scenery transitioned gracefully from dense concrete jungles to sweeping agricultural plains and deep boreal forests.
The modern urban fox demonstrates a remarkable capacity for behavioral adaptation, navigating concrete environments with surprising ease.
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