(algebra, field theory) algebraic number field

A plant in the taxonomic genus Equisetum (horsetails); Equisetum arvense.

A form of hockey played on a grassed pitch with a hard rubber ball instead of a puck.

A species of vole, Microtus agrestis.

(mathematics) a function mapping a subset of ℝⁿ into a subset of ℝⁿ / (differential geometry) a function which associates, to each point on a surface, a vector in the tangent plane of that point

The branch of mathematics dealing with the algebraic structure of fields. / (psychology) A theory which examines patterns of interaction between individuals and their environment.

plural of field vole

(physics) A force field

(physics) A region of space (a vector field) in which a force operates; contains lines of force; a field of force. / (chemistry) A mathematical description of the potential energy of a system of atoms.

A maple tree of the species Acer campestre.