| Subject | English | Estonian |
| earth.sc., environ. | column leaching | kolonnis leostumine |
| ornit. | Leach's fork-tailed petrel | põhja-tormipuäst (Oceanodroma leucorhoa) |
| environ. | soil leaching The removal of water or any soluble constituents from the soil. Leaching often occurs with soil constituents such as nitrate fertilizers with the result that nitrates end up in potable waters | mulla leostumine |