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periodontal ligament n.
The connective tissue surrounding the root of a tooth and attaching it to its bony socket. Also called alveolodental ligament, periodontal membrane.
fleshy tissue between tooth and tooth socket that holds the tooth in place, attaches it to the adjacent teeth, and enables it to resist the stresses of chewing. It develops from the follicular sac that surrounds the embryonic tooth during growth.