syncresis appears to be a misspelling (or alternative spelling) of the anglicisation of the Greek word sunkrisis (σύγκρισις), the basic meaning of which is 'aggregation, combination'. The spelling with e instead of i may be due to the influence of the word syncretism.
syncrisis is in the full online version of the OED.
Comments by anthonyfaulkes
AnthonyFaulkes commented on the word syncresis
syncresis appears to be a misspelling (or alternative spelling) of the anglicisation of the Greek word sunkrisis (σύγκρισις), the basic meaning of which is 'aggregation, combination'. The spelling with e instead of i may be due to the influence of the word syncretism.
syncrisis is in the full online version of the OED.
December 15, 2011