-ոց

Etymology
From.

Suffix

 * 1) ; -ing
 * 1) ; -ing
 * 1) ; -ing
 * 1) ; -ing
 * 1) ; -ing
 * 1) ; -ing

Etymology 1
From, suffix, with a preceding  stem vowel. The place-showing sense developed in Armenian.

Etymology 2
From the stem vowel +.