| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a scrap or morsel of food left at a meal. |
intrusion (ĭn-tr 'zhən) Pronunciation Key
The movement of magma through cracks in underground rocks within the Earth, usually in an upward direction. ◇ Rocks that form from the underground cooling of magma are generally coarse-grained (because they cool slowly so that large crystals have time to grow) and are called intrusive rocks. Compare extrusion. |