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English word grain comes from Latin granum (A grain, seed or small kernel.)
granum (Latin)
A grain, seed or small kernel.
grein (Old French)
grein (Middle English)
grain (English)
(botany) A rounded prominence on the back of a sepal, as in the common dock.. (countable) A former unit of gold purity, also known as carat grain, equal to 1⁄4 "carat" (karat).. (countable) A single particle of a substance.. (countable) A single seed of grass food crops.. (countable) A very small unit of weight, in England equal to 1/480 of an ounce troy, 0.0648 grams or, to be more exact, [...]