(mathematics) Any of the several axioms that an object should meet to be considered a mathematical field.

(definite, mathematics) the requirements for an object to be considered a field: / plural of field axiom

(sports) A variety of lacrosse played on a grassy field, outdoors.

(acoustics) The region within a distance a fraction of a wavelength from a sound source. Accordingly, the outer boundary of the near-field region is closer for high-pitched sound than for low-pitched sound.

plural of field guide

(software, object-oriented programming) Synonym of member variable

(algebraic number theory) A number field that is an extension field of degree two over the rational numbers.

(number theory, algebraic number theory) A number field obtained by adjoining a primitive root of unity to the field of rational numbers.

(algebra, field theory) A field L which contains a subfield K, called the base field, from which it is generated by adjoining extra elements.

An artillery piece, originally a smaller gun that could accompany a field army on the march and when in combat could be moved about the battlefield in response to changing circumstances.