ras

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

  1. noun the network in the reticular formation that serves an alerting or arousal function
  2. noun an intensely radioactive metallic element that occurs in minute amounts in uranium ores
  3. noun ancient Egyptian sun god with the head of a hawk; a universal creator; he merged with the god Amen as Amen-Ra to become the king of the gods

Etymology

From Amharic ራስ (ras). More at Etymology 2.

Synonyms

reticular activating system

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