1. Pertaining to or worked or produced by friction
   "frictional electricity"; "frictional heat"; "frictional gearing"

See also: friction

• syzygy
• Szechuan
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• Szechwan province
• Szell
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• São Thomé e Principe monetary unit
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• incautiousness
• incendiarism
• incendiary
• incendiary bomb
• incense
• incense cedar
• incense tree
• incense wood