midrib
plural of Mazhabi
(botany) The strengthened vein down the middle of a flower petal or simple leaf or leaflet. / (botany) The continuation of the petiole of a pinnately compound leaf around which the leaflets attach.
the state or quality of being unsupportable
(astronomy) The roughly 1460-year cycle between successive alignments of the first days of the Egyptian civil calendar and the observational Sothic year.
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