† melialadj. [ < Melian. + -alsuffix1, after scientific Latin Meliales, alliance name] Obsoleterare (in J. Lindley's terminology) designating an alliance embracing the family Meliaceae and certain other families.
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1836 J. LindleyNat. Syst. Bot. (ed. 2) 92 The highest alliances in regard to structure are the Malval and Melial.