| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Eruptive rocks | Geography | Rock masses formed by the solidification of magma injected into the earth's surface, or extruded on its surface; Said of a rock that solidified from molten or partly molten material i. e. from magma. "igneous" rocks constitute one of the three main classes into which all rocks are divided: igneous, metamorphic, sedimentary. (cf. no 5157 et no 5158; cf. no 5153). Source: European Union. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
