n. The act of increasing in size or bulk, real or apparent; the state of being increased; augmentation; dilatation; expansion: as, the enlargement of a field by the addition of two or three acres; enlargement of the heart.n. Something added on; an addition.n. Expansion or extension, as of powers and influence; an increase of capacity, scope, or comprehension, as of the sympathies and character.n. Release from captivity, bondage, distress, or the like; a setting at large or at liberty.n. The state or condition of being at large or unrestrained.n. Diffuseness of speech or writing; expatiation on a particular subject; extended discourse or argument.n. In the calculus of finite differences, the operation of changing a function by adding unity to the variable. It is denoted by the letter E. Thus, E log x = log (x + 1).n. In photography, a picture of any kind, especially a positive, made of a larger size than the negative from which it is taken. See solar printing, under printing.