Erayga "oxygen acid" waxa loola jeedaa asiidh ka kooban ogsijiin, hydrogen, iyo ugu yaraan hal walxood oo kale. Oxygen acids waxa kale oo loo yaqaan oxoacids. Asiidhyadan, atamka hydrogen-ka waxa ay ku xidhan yihiin atamka oksijiinta, xoog asiidhkuna waxa ay ku xidhan tahay tirada iyo habaynta atamka oksijiinta iyo curiyaha kale. Tusaalooyinka asiidhyada oksijiinta waxaa ka mid ah sulfuric acid (H2SO4), nitric acid (HNO3), iyo fosfooraska acid (H3PO4).