Kernel



GRE Barron TOEFL

解释

GRE 红宝书

• n. 果仁; 核心
• ［英］ n. 果仁;核心 ( the central, most important part; essence)
• ［记］ kern ( =corn种子) +el -> 核心

Webster Collegiate

noun

• Etymology: Middle English, from Old English cyrnel, diminutive of corn
• Date: before 12th century
• 1. chiefly dialect a fruit seed
• 2. the inner softer part of a seed, fruit stone, or nut
• 3. a whole seed of a cereal <a kernel of corn>
• 4. a central or essential part ; germ <like many stereotypes…this one too contains some kernels of truth — S. M. Lyman>
• 5. a subset of the elements of one set (as a group) that a function (as a homomorphism) maps onto an identity element of another set

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