membrane

https://doi.org/10.1351/goldbook.11555
  1. In anatomy, thin layer of tissue separating or connecting structures or organs.
  2. In cell biology, phospholipid-based bilayer structure, surrounding and isolating cells and organelles.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 776 (https://doi.org/10.1515/pac-2015-1202)