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Adj.1.planoconvex - flat on one side and convex on the other
bulging, convex - curving or bulging outward
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References in periodicals archive ?
Medium-sized orthide with planoconvex shell; ornament fascicostellate, with 12-14 coarse primary costae branching on anterior half of valves.
The vitreous chamber of the aqueous appeared as a single planoconvex, anechoic space.
While clearing blown sand from second storey room 6 we found on the floor close to the northwest corner an artifact of porphyry or andesite, planoconvex in cross section, and a quartz crystal with worn corners.