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moment

(Encyclopedia) moment, in physics and engineering, term designating the product of a quantity and a distance (or some power of the distance) to some point associated with that quantity. The most…

multiplication

(Encyclopedia) multiplication, fundamental operation in arithmetic and algebra. Multiplication by a whole number can be interpreted as successive addition. For example, a number N multiplied by 3 is…

melamine

(Encyclopedia) melaminemelaminemĕlˈəmēnˌ [key], common name for 2,4,6-triamino-1,3,5-triazine. Melamine is a trimer (see polymer) of cyanamide, H2NC≡N, and is synthesized from calcium carbide. It…

fair trade

(Encyclopedia) fair trade, a trading arrangement intended to provide more equitable international trade by creating better conditions for disadvantaged or marginalized producers of goods. Fair trade…

momentum

(Encyclopedia) momentummomentummōmĕnˈtəm [key], in mechanics, the quantity of motion of a body, specifically the product of the mass of the body and its velocity. Momentum is a vector quantity; i.e…

factor

(Encyclopedia) factor, in arithmetic, any number that divides a given number evenly, i.e., without any remainder. The factors of 12 are 1, 2, 3, 4, 6, and 12. Similarly in algebra, any one of the…

Ellwood City

(Encyclopedia) Ellwood City, industrial borough (2020 pop. 7,166), Beaver and Lawrence counties, W central Pa., near the Ohio line; inc. 1892. It has…