organization, organochlorines, organogenesis, organogenic, organoleptic, organophosphates, organotins, orientation, orifice, origin, originator, ornamental, ornis, ornithology, ornithophilous, ornithosis, orolochmis, orophyte, orphan, orrhodiagnosis, orrhoreaction, orthic, orthogenics, orthomyxoviridae, orthopoxvirus, orthoptera, oscillation, osculiferous, oshkonite, osier-bed - English-Kazakh Ecological Dictionary - Казахские словари