Gd meaning : A particular function, \mathrm{gd}(x)=2\tan^{-1}e^x-\frac\pi2. (of people) (of capabilities) (properties and qualities) (when with and) Very, extremely. See good and. Holy (especially when capitalized) . (of quantities) Of a large size or extent; great. Great in size, and fine or imposing in appearance or impression; illustrious, dignified, magnificent. Having higher rank or more dignity, size, or importance than other persons or things of the same name. (usually in compound forms) Standing in the second or some more remote degree of parentage or descent. Fine; lovely. Containing all the parts proper to a given form of composition.