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The Collaborative International Dictionary
Synartesis

Synartesis \Syn`ar*te"sis\, n. [NL., fr. Gr. ? a fastening together, fr. ? to fasten together.] A fastening or knitting together; the state of being closely jointed; close union. [R.]
--Coleridge.

Wiktionary
synartesis

n. A fastening or knitting together; close union.