(rail transport) A design of bogie used for articulated passenger trains and trams, where the ends of two cars are mounted on the same bogie.

plural of Jacob's membrane

(organic chemistry) An organic synthesis for the preparation of quinolines.

plural of Gould-Jacobs reaction

Polemonium vanbruntiae, a species of flowering plant.

Used to specify certain mathematical objects named in honour of C. G. J. Jacobi.

(calculus) A Jacobian matrix or its associated operator. / (calculus) The determinant of such a matrix.

Of or relating to the biblical Jacob.

(number theory) A mathematical function of integer a and odd positive integer b, generally written (a/b), based on, for each of the prime factors pᵢ of b, whether a is a quadratic residue or nonresidue modulo pᵢ.

An English surname transferred from the given name.