tingimata tarvilik, eluvajalik, referring to an organism that exists or develops only in a particular set of circumstances
depending on or produced by compulsion; compelled, forced, enforced, obligatory, of the nature of, pertaining to, or conveying a command or mandate, compelled; mandated by legal process or by statute
obligatorisch 1 . Limnoloogia sõnastik. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//lim/obligatorisch/1/deu (19.06.2026)
