There are multiple definitions:

1. multiple endocrine adenomatosis(English)

   • MEN
   • Endocrinology

2. multi-electrode array(English)

   • BP, CFP, pMEA, PDL, PEI, PP, PSS, TECA
   • Electrophysiology

3. medial [nuclei of] amygdala(English)

   • stress-related brain region; also denoted as MeA
   • CEA, CRH, FBGRKO, FST, GR, HPA, MR, PVN
   • Anatomy, Brain (dys)function, Neurons, Stress (test)
   • https://doi.org…68.2000.00958.x
   • https://doi.org…res.2019.146392

4. multilateral environmental agreement(English)

   • MAE
   • Environment, Pollution and health
   • http://ec.europ…nt/index_en.htm

5. monoethanolamine(English)

   • LPC, MUFA, PUFA
   • Diet
   • https://doi.org….3382/ps/pex095

6. membrane electrode assembly(English)

   • DMFC, OCV, PEM
   • Energy transition
   • https://doi.org…science.1090920