enlargement
[C/U] Both
pl: enlargements
This term carries a clinical or technical precision. It is frequently used in medical contexts to describe an organ that has grown abnormally, such as an enlargement of the prostate, where the tone is neutral but the implication is often pathological. In photography or printing, it refers to a physical increase in scale. While "expansion" suggests a widening or spreading out (like a balloon or a business), "enlargement" focuses on the resulting larger size of a specific object or a magnified version of an original.
Countable when referring to a specific magnified photograph. Uncountable when referring to the general process of increasing in size.