noun
: a theory in botany: a growing point (as of a stem or root) consists of three histogens each of which gives rise to a different tissue — see dermatogen , periblem , plerome
noun
: a theory in botany: a growing point (as of a stem or root) consists of three histogens each of which gives rise to a different tissue — see dermatogen , periblem , plerome
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012