libra-, liber-, libri-
(Latin: balance; to be balanced; to make even; Roman pound)
2. The ability to maintain a mental state of calmness and composure.
3. A situation in which opposing forces or factors balance each other and stability is attained.
4. In a physical sense: The condition of equal balance between opposing forces; that state of a material system in which the forces acting upon the system, or those that are taken into consideration, are so arranged that their resultant at every point is zero.
5. The state of equal balance between powers of any kind; equality of importance or effect among the various parts of any complex unity.
6. The condition of suspense or uncertainty produced by equality with the forces of opposing influences; neutrality of judgment or volition.
7. Etymology: from Latin æquilibrium, from æquus, "equal" + libra, "a balance, scale".
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2. The proportional distribution, and the migration rate, in the global fractionation of elements, minerals, or compounds; for example, the distribution of quartz in igneous rocks, its liberation by weathering, and its redistribution into sediments and, in solution, into lakes, rivers, and oceans.
Sediments refer to solid fragments of inorganic or organic material that come from the weathering (disintegration and decomposition) of rock and are carried and deposited by wind, water, or ice.
2. A land area of uniform elevation: "The pictures were hung on the wall at eye level."
3. Etymology: The Latin word for a "balance" or "scales" was libra. English took it as The zodiacal sign and it lies behind many terms for units of measurement, including litre, or liter and the abbreviation lb or £ for British currency known as the "pound".
Its diminutive form was libella, which denoted an "instrument for checking horizontally" and hence a "horizontal line".
It passed into Old French as livel; which in modern French has become niveau, "level", and it entered English as level.
2. To render people or things equal; to equalize: "The mayor wants to level the opportunities for smaller companies to compete against the big companies in the city."
3. To direct something against a person or group: "Several complaints have been leveled against the government for not responding to the economic crisis that is causing so many people to lose their jobs."
4. To speak honestly to someone: "Rebecca's co-worker never leveled with her about backing his car into her vehicle in the parking lot."
"The recipe indicated that there should be a level tablespoon of sugar which fills the spoon exactly without going any higher than the edges."
2. Descriptive of being without irregularities, roughness, or indentations: "The carpenter made the floor as smooth and level as possible."
3. Steady and calm: "The teacher spoke to her students in a level voice when she told them that everyone had passed the test."
"Brian's brother tried his level best to win the race."
2. In the zodiac, the seventh sign of the zodiac represented by a pair of scales and lasting from approximately September 23 to October 2.
2. Libra is classified as an air sign and its ruling planet is Venus.
2. To oscillate like the beam of a balance; to move from side to side or up and down.
3. When referring to a bird, etc.; to be poised, to balance itself.
2. A balance in which the sample weight is determined by comparison with a calibrated weight.
The mechanical balance consists, essentially, of a rigid beam that oscillates on a horizontal central knife-edge as a fulcrum and has the two end knife-edges parallel and equidistant from the center. The loads to be weighed are supported on pans hung from bearings.
Sensory balance is the result of a number of body systems working together; specifically, in order to achieve balance the eyes (visual system), ears (vestibular system) and the body's sense of where it is in space (proprioception or the unconscious perception of movement and spatial orientation arising from stimuli within the body itself); all of which need to be intact and normally coordinated.