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Related to apical root: quiescent center, apical root resorption
See: basis, bloodline, cause, derivation, determinant, embed, establish, reason

ROOT. That part of a tree or plant under ground from which it draws most of its nourishment from the earth.
     2. When the roots of a tree planted in one man's land extend into that of another, this circumstance does not give the latter any right to the tree, though such is the doctrine of the civil law; Dig. 41, 1, 7, 13; but such person has a right to cut off the roots up to his line. Rolle's R. 394, vide Tree.
     3. In a figurative sense, the term root is used to signify the person from whom one or more others are descended. Vide Descent; Per stirpes.

References in periodicals archive ?
In root fracture cases there are two objectives, firstly to achieve the union of two fragments (without granulation tissue interposing in between them) and secondly leave the apical root fragment in situ in the alveolus as it helps to maintain the bone height and remains vital.