di /diː/ exclamation1 •A meaningless syllable used when singing a tune or indicating a rhythm.The chorus goes like this: "di di di di dum, da di da".
DI noun 11 noun11 •(Commonwealth) a short written form of "Detective Inspector", a fairly high level of police officer •Initialism of diabetes insipidus. •Initialism of dependency injection. •Initialism of direct input. •Ellipsis of DI unit. •Initialism of direct injection (“fuel injection”). •Initialism of ductile iron. •Initialism of directional influence (“the ability to change one's direction of movement while falling”). •Initialism of dens invaginatus. •Initialism of disposition index. •Initialism of diffused illumination.