apical meristem definition
Apical meristem. Permanently embryonic tissue involved in cell division at the apices of plant roots and stems, and forming dynamic regions of growth. These apical meriÂ­stems, usually consisting of small, densely cytoplasmic cells, become established during embryo development.ermanently embryonic tissue involved in cell division at the apices of plant roots and stems, and forming dynamic regions of growth. These apical meriÂ­stems, usually consisting of small, densely cytoplasmic cells, become established during embryo development.