(mathematics, algebraic number theory) A field which includes the rational numbers and has finite dimension as a vector space over the rational numbers.

Communication over very short distances, as by contact or near contact of electronic devices.

(mathematics) An ordered field which satisfies the axiom of Archimedes.

plural of open-field test

A scientific test to gauge an animal's locomotor activity levels, anxiety, and willingness to explore, by placing the animal in an enclosed arena and observing its actions.

(art) A style of abstract painting characterised by large, flat surfaces of solid colour

plural of algebra over a field

(algebra) A vector space (over some field) with an additional binary operation, a vector-valued product between vectors, which is bilinear over vector addition and scalar multiplication. (N.B.: such bilinearity implies distributivity of the vector multiplication with respect to the vector addition, which means that such a vector space is also a ring.)

(quantum mechanics) A theory of quantum fields; the result of applying second quantization to Classical Relativistic Field Theory.

plural of Field-lane duck