e

Reading level: medium

Estimated CEFR level: A2 — Elementary

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body
  2. noun a radioactive transuranic element produced by bombarding plutonium with neutrons
  3. noun the cardinal compass point that is at 90 degrees

Etymology

The letter name is ultimately from Latin ē. Use of the Latin letter in (Old) English displaced, in whole or in part, five futhorc letters in the 7th century: ᛖ (e), ᚫ (æ), ᛠ (ea), ᛇ (eo), and ᛟ (œ).

In classic literature

Synonyms

vitamin E, tocopherol

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