A village in County Tyrone, Northern Ireland.

A surname from Irish.

plural of Donado

A surname from Spanish.

The act of donating one's blood for use in transfusion.

plural of Donachie

A surname from Scottish Gaelic.

plural of Donaldson-Thomas invariant

(algebraic geometry) The theory of Donaldson-Thomas invariants.

(algebraic geometry) Given a compact moduli space of sheaves on a Calabi-Yau threefold, its Donaldson-Thomas invariant is the virtual number of its points, i.e., the integral of the cohomology class 1 against the virtual fundamental class.