noun

• (economics, European Union) Initialism of European Common Market.
• Initialism of engine control module.
• (materials science) Abbreviation of engineered cellular magmatic.
• (computing) Initialism of enterprise content management.
• (grammar) Initialism of exceptional case-marking. [(grammar) A phenomenon where the subject of an embedded infinitival verb seems to appear in the superordinate clause, and, if a pronoun, is unexpectedly marked with objective case morphology.]
• (medicine) Initialism of extracellular matrix. [(anatomy, cytology, histology) All the microscopic fibres and other molecular structures that are produced by a particular type of cell but are not part of it (that is, that lie outside its cell membrane), providing support to the cells and often serving as a co-constituent of the tissue that they constitute, especially a connective tissue.]
• (astronomy) Abbreviation of extra-cluster medium.
• Initialism of electronic countermeasure.
• (mathematics) Initialism of elliptic curve method.