the plant family Cistaceae, characterized by herbaceous plants and shrubs having simple, usually opposite leaves, solitary or clustered flowers, and capsular fruit, and including the frostweed, pinweed, and rockrose.
noun 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geology. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable quantities in nature, as by the action of heat or water. a particular kind of such matter: igneous rock. 3. stone in the mass: buildings […]
noun 1. common salt occurring in extensive, irregular beds in rocklike masses. noun 1. another name for halite
- Rock sequence
noun a set of rocks contained in a series of layers, used to interpret the paleoenvironment over a period of time Examples The volcanic and sedimentary rock sequence exposed on Macquarie Island is basically made up of three components.
noun, Machinery. 1. an oscillating shaft. noun 1. a shaft that rotates backwards and forwards rather than continuously, esp one used in the valve gear of a steam engine