105996646 a branch of knowledge; "in what discipline is his doctorate?"; "teachers should be well trained in their subject"; "anthropology is the study of human beings".
108005260 (mathematics) a set of elements such that addition and multiplication are commutative and associative and multiplication is distributive over addition and there are two elements 0 and 1; "the set of all rational numbers is a field".
111456760 the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it.
108551628 a region in which active military operations are in progress; "the army was in the field awaiting action"; "he served in the Vietnam theater for three years".
108569777 somewhere (away from a studio or office or library or laboratory) where practical work is done or data is collected; "anthropologists do much of their work in the field".