- tetrafunctional
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/te'treuh fungk"sheuh nl/, adj. Chem.pertaining to molecules or groups that can bond at four sites.[TETRA- + FUNCTIONAL]
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Universalium. 2010.
tetrafunctional
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tetrafunctional — tet·ra·functional … English syllables
tetrafunctional — ¦te.trəˌ adjective Etymology: tetra + functional : of, relating to, or being a compound whose molecules have four sites that are highly reactive (as in polymerization) * * * /te treuh fungk sheuh nl/, adj. Chem. pertaining to molecules or groups… … Useful english dictionary
FR-4 — FR 4, an abbreviation for Flame Retardant 4, is a type of material used for making a printed circuit board (PCB). It describes the board itself with no copper covering. FR 4 meets the requirements of Underwriters Laboratories UL94 V0. The FR 4… … Wikipedia
