enlargement
n.the act of making something bigger, or a copy of a photograph that is larger than the original.
n.the process of increasing the size, scale, or scope of something; a photographic print made larger than the negative.
“The doctor suggested an enlargement of the heart might be the problem.”
“The company is planning an enlargement of its main factory to meet the growing demand for electric vehicles.”
“The proposed enlargement of the European Union requires unanimous consent from all existing member states to ensure political and economic stability across the continent.”
Countable when referring to a specific larger copy or instance; uncountable when referring to the general process of growing larger.
“Gaining a rich and stable new member in Iceland would be a welcome win for EU enlargement, says Hallgrímur Oddsson, head of the EU-Iceland think-tank European Currents.”
From enlarge + -ment.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.