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n.1.A subdivision into four parts.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Furthermore, this new multilevel method retains the ability to operate as a quadrisection or octasection algorithm, and can be applied to weighted graphs transparently.
Four gingivally related quadrisections of each tooth (mesiobuccal, distobuccal, mesiolingual, distolingual) were visually examined for plaque deposits using a modification of the index of O'Leary [Franco et al., 1996].
The gingivae were visually examined for inflammation using the same simplified gingival index based on the number of tooth quadrisections associated with gingival inflammation to give the gingivitis score.