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od1

Syllabification: (od)
Pronunciation: /äd/

Definition of od

noun

historical
  • a hypothetical power once thought to pervade nature and account for various phenomena, such as magnetism.

Origin:

mid 19th century: arbitrary term coined in German by Baron von Reichenbach (1788–1869), German scientist

od in other Oxford dictionaries

Definition of od in the British & World English dictionary