germinal

(jur'rnl-nal). Relating to a germ or to germination, g. disc, germ-disc, gastrodisc, a little heap of cells of the endoderm adherent to the interior of the ectoderm in a gastrocystis. g. rod, sporozoite. g. u'nits, portions of the germ cells which are a umed to have certain specific functions in development, g. ves'icle Purkinje's vesicle, the nucleus of a mammalian ovum.