|pər., (ˈ)per+ adjective
Etymology: per- + alkaline
: having a molecular proportion of alumina less than that of soda and potash combined — used of an igneous rock
|pər., (ˈ)per+ adjective
Etymology: per- + alkaline
: having a molecular proportion of alumina less than that of soda and potash combined — used of an igneous rock
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012