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

See also: friction

• held
• Helen
• Helen Adams Keller
• Helen Hayes
• Helen Hunt Jackson
• Helen Keller
• Helen Laura Sumner Woodbury
• Helen Maria Fiske Hunt Jackson
• Helen Newington Wills
• Helen of Troy
• Helen Porter Mitchell
• Helen Traubel
• Helen Wills
• Helen Wills Moody
• Helena
• Helene
• Helenium
• Helenium autumnale
• Helenium hoopesii
• Helenium puberulum
• Heleodytes
• heli-
• heliac
• heliacal
• Heliamphora