seesmine loomus, asja või nähtuse sisu, see, ilma milleta miski või keegi poleks see, mis ta on

any of a large class of volatile odoriferous oils of vegetable origin that are obtained ... by distillation, expression or extraction, that are used in the form of essences in perfumes, flavoring materials, and pharmaceutical preparations, lõhna- ja maitseainete kontsentreeritud lahus