Mean Sea Level

Science / Weather / Mean Sea Level: The average height of the sea surface water level. For the United States, it is computed by averaging the levels of all tide stages over a nineteen year period, determined from hourly height readings measured from a fix, predetermined reference level. It is used as a basis for determining elevations, as the reference for all altitudes in upper air measurements, and as the level above which altitude is measured by a pressure altimeter for aviation. Often referred to as MSL.
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Other Words for Level

Level Noun Synonyms: horizontal, prone, supine
Level Adjective Synonyms: even, smooth, plane, uniform, plain, flat, flush, straight, true
Level Verb Synonyms: aim, point, draw a bead, direct, train, focus
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Other Words for Mean

Mean Noun Synonyms: intend, design, purpose, plan, aim, have in mind, contemplate, have in view, want, wish, expect, hope, be motivated by, have as justification
Mean Verb Synonyms: portend, show, foretell, foreshadow, promise, presage, augur, herald
Mean Adjective Synonyms: denote, signify, indicate, note, specify, designate, represent, betoken, signal, carry, convey, drive at, refer to, allude to, communicate, express, bring out, get over or across, imply, suggest, connote, intimate, hint (at)
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Other Words for Sea

Sea Verb Synonyms: swell, breaker, wave
Sea Adjective Synonyms: ocean, deep blue sea, high seas, (briny) deep, (bounding) main, Neptune's or Poseidon's kingdom or domain, blue water, Davy Jones's locker, briny, drink, pond (= 'Atlantic Ocean')
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Sargasso Sea

Science / Tides and Currents / Sargasso Sea: The west central region of the sub-tropical gyre of the North Atlantic Ocean. It is bounded by the North Atlantic, Canary, North Equatorial, and Antilles Currents, and the Gulf Stream. It is character MORE

Root Mean Squared (RMS)

Technology / Home Audio / Root Mean Squared (RMS): A term used to indicate the average level of power that a receiver or amplifier can sustain over a given period of time. Average power ratings (ex: 100 watts RMS) provide a more realistic assessment o MORE

Resistance Level

Business / Finance / Resistance Level: A price level above which it is supposedly difficult for a security or market to rise. Price ceiling at which technical analysts note persistent selling of a commodity or security. Antithesis of suppo MORE