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Definition of TRANSIENCE. : the quality or state of being transient. ADVERTISEMENT. 1  transience.
Medical Definition of TRANSESTERIFICATION. : a reversible reaction in which one ester is converted into another (as by interchange of ester groups with an alcohol in the presence of a base).What made you want to look up transesterification? a reversible reaction in which one ester is converted into another (as by interchange of ester groups with an alcohol in the presence of a base).