one-drop rule
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One-drop rule — The one drop rule is a historical colloquial term in the United States for the social classification as black of individuals with any African ancestry; meaning any person with one drop of black blood was considered as black. The principle was an… … Wikipedia
One Drop — may refer to: One Drop Foundation, a non profit organization that advocates for equal access to water One drop rhythm, a rhythmic pattern used in reggae music and related styles One drop rule, a law in the antebellum South that stated that a… … Wikipedia
One-child policy — Government sign in Tang Shan: For a prosperous, powerful nation and a happy family, please practice family planning. The one child policy (simplified Chinese: 计划生育政策; traditional Chinese: 計劃生育政策; pinyin: jìhuà shēngyù zhèngcè; literally policy of … Wikipedia
One Canada Square — A view of One Canada Square, the second tallest building in the United Kingdom. Record height Tallest in the United … Wikipedia
One Night Genius — Format Reality quiz show Country of origin United States Language(s) … Wikipedia
One (pronoun) — One is a pronoun in the English language. It is a gender neutral, third person singular (though slightly anomalous, see reflexivity of one below) pronoun, commonly used in English prose. It is equivalent to the French pronoun on (from homme ,… … Wikipedia
Drop goal — A drop goal, also referred to as a dropped goal or field goal, is a method of scoring points in rugby union and rugby league. A drop goal cannot be scored in open play by punting the ball, and instead must be scored by drop kicking the ball over… … Wikipedia
Drop tank — A 330 US gallons (1,200 L) Sargent Fletcher drop tank being moved across the flight deck of an Aircraft carrier In aeronautics, a drop tank (external tank, wing tank, or belly tank) is used to describe auxiliary fuel tanks externally carried … Wikipedia
Slide rule — For other uses, see Slide rule (disambiguation). A typical ten inch student slide rule (Pickett N902 T simplex trig). The slide rule, also known colloquially as a slipstick,[1] is a mechanical analog computer. The slide rule is used primarily for … Wikipedia
Divisibility rule — A divisibility rule is a shorthand way of discovering whether a given number is divisible by a fixed divisor without performing the division, usually by examining its digits. Although there are divisibility tests for numbers in any radix, and… … Wikipedia
