-ιο

Greek

Alternative forms

Etymology

Inherited from Ancient Greek -ῐον (-ĭon).

The scientific sense is most likely a semantic loan from New Latin -ium.

Suffix

-ιο • (-io) n (plural -ια)

  1. a suffix for forming diminutive nominal suffixes
  2. (sciences) a suffix for forming the names of chemicals or scientific materials
    ‎English alkane + ‎-ιο (-io) → ‎αλκάνιο (alkánio)
    ‎English positron + ‎-ιο (-io) → ‎ποζιτρόνιο (pozitrónio)

Declension

Declension of -ιο
singular plural
nominative -ιο (-io) -ια (-ia)
genitive -ίου (-íou)
-ιου (-iou) 		-ίων (-íon)
-ιων (-ion)
accusative -ιο (-io) -ια (-ia)
vocative -ιο (-io) -ια (-ia)
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