"synthesises" in the noun sense
1. synthesis
the process of producing a chemical compound (usually by the union of simpler chemical compounds)
2. synthesis, synthetic thinking
the combination of ideas into a complex whole
3. deduction, deductive reasoning, synthesis
reasoning from the general to the particular (or from cause to effect)
"synthesises" in the verb sense
1. synthesize, synthesise
combine so as to form a more complex, product
"his operas synthesize music and drama in perfect harmony"
"The liver synthesizes vitamins"
Source: WordNet® (An amazing lexical database of English)
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