Engineering , symbol for advance ratio
• (bold ital.) Physics , symbol for angular momentum
• (ital.) Physics , symbol for coupling constant
• (ital.) Physics , symbol for current density
• British vehicle registration for Durham
• Cards jack
• Maths. , symbol for Jacobian determinant
• international vehicle registration for Japan
• British fishing port registration for Jersey
• Immunol. joining region (of an immunoglobulin chain)
• Science , symbol for joule(s)
• Geology Jurassic
• (bold ital.) Physics , symbol for magnetic polarization
• (ital.) Physics , obsolete symbol for mechanical equivalent of heat
• (ital.) Physics , symbol for nuclear spin quantum number
• (ital.) Chem. , symbol for rotational quantum number
• (ital.) Physics , symbol for sound intensity
• (ital.) Physics , symbol for total angular momentum quantum number