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spring, in geology

(Encyclopedia)spring, in geology, natural flow of water from the ground or from rocks, representing an outlet for the water that has accumulated in permeable rock strata underground. Some of the water that falls as...

spring, in mechanics

(Encyclopedia)spring, in mechanics, any of several elastic devices used variously to store and to furnish energy, to absorb shock, to sustain the pressure between contacting surfaces, and to resist tensional or com...

stock, in botany

(Encyclopedia)stock, in botany, common name for any species of the genus Matthiola, for Malcomia maritima (Virginia stock), and for the wallflower, all belonging to the family Cruciferae (or Brassicaceae; mustard f...

stock, in finance

(Encyclopedia)stock, in finance, instrument certifying to shares in the ownership of a corporation. Bonds are similar evidences of shares in a loan to a corporation. Stock yields no dividends until claims of bondho...

stock, in horticulture

(Encyclopedia)stock, in horticulture: see grafting. ...

shield, in geology

(Encyclopedia)shield, in geology: see continent. ...

restoration, in art

(Encyclopedia)restoration, in art: see art conservation and restoration. ...

rhea, in zoology

(Encyclopedia)rhea rēˈə [key], common name for a South American bird of the family Rheidae, which is related to the ostrich. Weighing from 44 to 55 lb (20–25 kg) and standing up to 60 in. (152 cm) tall, the rh...

Rhea, in astronomy

(Encyclopedia)Rhea, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn V (or S5), Rhea is 950 mi (1530 km) in diameter, orbits Saturn at a mean distance of 327,487 mi (527,...

Proconsul, in zoology

(Encyclopedia)Proconsul, extinct group of apes. Proconsul fossils have been discovered in E Africa. It had a mixture of ape and Old World monkey characteristics, and lived from 23 to 25 million years ago. ...