quadrantal

adjective

qua·​dran·​tal (ˈ)kwä¦drantᵊl 

: of or relating to a quadrant : included in or in the shape of a fourth part of a circle

quadrantal open-tiered stand

—Parke-Bernet Galleries Catalog

Word History

Etymology

Latin quadrantalis containing the fourth part of a measure, from quadrant-, quadrans fourth part + -alis -al

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