Etymology

acra

A1C3R1A1

Today it means: The vascular areas of the body most removed from the heart. Full definition →

Ancient Greek ἀ̆κρᾰ ← German Akren
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The story

  1. German · borrowed fromAkren
  2. Ancient Greek · derived fromἀ̆κρᾰ
  3. English todayacra

From Ancient Greek ἀ̆κρᾰ (ăkră), probably back-formed from German Akren as this is more easily encountered and even the English is most likely found in books written by Germans.

Etymology from Wiktionary, CC BY-SA 4.0.