a nominal partner

To some extent. / In part.

(physics) A subatomic particle with an unusually long lifetime and a large mass; a bound state of a charm quark and an anti-charm quark.

The particular green party of a country or region.

(law) The party in a civil lawsuit whom the factfinder determines to be right, and who, in some jurisdictions, may recover attorney's fees and other expenses associated with the prosecution or defense of the lawsuit.

(physics) Any particle, especially a subatomic particle, that carries an electric charge. / (chemistry) An ion.

(mathematics) Any solution to a differential equation.

(law) A derivative lawsuit brought by a defendant in an original lawsuit, claiming that another new party being brought in is responsible for or should share in the plaintiff's damages against the defendant.

(calculus) A differential equation that involves the partial derivatives of a function of several variables.

(mathematics) A derivative with respect to one variable of a function of several variables with the other variables held constant.