tapetum defined in 1951 yeartapetum - tapetum;
tapetum - (1) In vascular plants, layer of cells, rich in food material, surrounding a group of spore mother cells, e.g. in fern sporangium, pollen sacs of anther; gradually disintegrate and liberate their contents which are absorbed by the developing spores. (2) Of vertebrate eye, reflecting layer of retina or choroid.
near tapetum in Knolik
definition of word "tapetum" was readed 939 times