noun
: the ratio of the weight of water absorbed during the growth of a plant to the dry matter produced often expressed as the number of grams of water taken up per gram of dry weight of plant product
noun
: the ratio of the weight of water absorbed during the growth of a plant to the dry matter produced often expressed as the number of grams of water taken up per gram of dry weight of plant product
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012