(travel, aviation) Initialism of Global Distribution System. / (mathematics) Initialism of Graph Dynamical System.

(UK) Initialism of Government Digital Service.

Abbreviation of good. / Abbreviation of grand.

(mathematics) Abbreviation of Gudermannian.

(euphemistic) Initialism of goddamn.

(endocrinology) Initialism of gain of deiodinases: the sum activity of peripheral deiodinases. / (netball) Initialism of goal defence. / (psychiatry) Initialism of gender dysphoria.

(chemistry, military) Initialism of German agent D (US designation for the nerve gas soman).

Initialism of gigabyte disk read-only memory: a proprietary optical disc format, resembling a CD-ROM but with higher storage capacity, used by certain video game systems.

plural of GD-ROM

(engineering) Initialism of Geometric Dimensioning and Tolerancing.