| 1. | Biology. osmosis toward the inside of a cell or vessel. |
| 2. | Physical Chemistry. the flow of a substance from an area of lesser concentration to one of greater concentration (opposed to exosmosis ). |
endosmosis en·dos·mo·sis (ěn'dŏz-mō'sĭs, -dŏs-)
n.
The passage of a fluid inward through a permeable membrane, as of a cell, toward a fluid of higher concentration.