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speed at which sound travels in a given medium under specified conditions, kiirus, millega heli konkreetsetes tingimustes kindlaksmääratud keskkonnas levib, distance travelled per unit of time by a sound wave as it propagates through an elastic medium
heli kiirus . Koolisõnastikud 2005–2010. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kool_KV/heli%20kiirus/1/est (12.07.2026)
