-ιος

Etymology
From.

Suffix

 * : pertaining to, belonging to ("of").

Etymology 1
From. Found in inherited words, and compositions of formal words.

Pronunciation
for older or formal words:

Suffix

 * 1) Used to form nouns and adjectives indicating origin:
 * Related term: for demonyms
 * Related term: for demonyms

Etymology 2
Modern formations of derivatives from verbs or adjectives +

Pronunciation
in one syllable:
 * with palatal variants depending on the preceding consonant

Suffix

 * 1) Used to form adjectives indicating property, characteristic of the prototype word: