rootlessness Definition

the usually underground part of a seed plant body that originates usually from the hypocotyl, functions as an organ of absorption, aeration, and food storage or as a means of anchorage and support, and differs from a stem especially in lacking nodes, buds, and leaves

any subterranean plant part (such as a true root or a bulb, tuber, rootstock, or other modified stem) especially when fleshy and edible

the part of a tooth within the socket; also : any of the processes into which this part is often divided