IPA: /ˈtrɪb.juː.tɪn/
KK: /ˈtrɪbjuːtaɪlˌtɪn/
A chemical compound made from tin that is used to kill harmful organisms, especially in marine environments.
Tributyltin is often found in antifouling paints to prevent the growth of barnacles on ships.
Tributyltin is formed from "tri-" (meaning three), "butyl" (from the word butane, which refers to a four-carbon alkane), and "tin" (from the metal tin, derived from Old English "tin" and Latin "stannum"). The word refers to a chemical compound containing three butyl groups attached to a tin atom.
Think of 'three' ('tri-') butyl groups connected to 'tin' — that's what tributyltin is.
No commonly confused words.