To make something by synthesis, i.e., synthetically.
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syn·the·size also Brit syn·the·sise -.sīz vt, -sized also Brit -sised; -siz·ing also Brit -sis·ing to combine or produce by synthesis <\synthesize penicillin>
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syn·the·size (sinґthə-sīz) to produce by means of synthesis.Medical dictionary. 2011.