Standard Time

Science / Tides and Currents / Standard Time: A kind of time based upon the transit of the Sun over a certain specified meridian, called the time meridian, and adopted for use over a considerable area. With a few exceptions, standard time is based upon some meridian which differs by a multiple of 15° from the meridian of Greenwich. The United States first adopted standard time in 1883 on the initiative of the American Railway Association, and at noon on November 18 of that year the telegraphic time signals from the Naval Observatory at Washington were changed to this system.
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Other Words for Standard

Standard Noun Synonyms: criterion, measure, benchmark, model, pattern, archetype, touchstone, yardstick, gauge, guide, guideline, paradigm, paragon, exemplar, example, sample, type, ideal, beau id�al, rule, canon, law, requirement, precept, principle
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Other Words for Time

Time Noun Synonyms: period, interval, stretch, spell, patch
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Standard Industrial Classification (SIC)

Business / Finance / Standard Industrial Classification (SIC): In statistics, a measure of the possible error in an estimate. Plus or minus 2 standard errors usually provides a 95% confidence interval. MORE

Standard Hydrogen Electrode

Science / Chemistry / Standard Hydrogen Electrode: A platinum electrode that runs the half reaction 2 H+(aq, 1M) + 2 e- rightarrow H2(g, 1 atm), chosen as a reference for cell voltages. The electrode potential of the standard hydrogen electrode is def MORE

Standard Lens

Entertainment / Photography / Standard Lens: Lens with a focal length approximately equal to the diagonal of the film format with which it is used. MORE