(aviation) A self-propelled airship that can be steered.

steerable

plural of dirigible

A Roman Catholic service for the dead, being the first antiphon of matins for the dead, of which dirige is the first word; a dirge.

plural of dirige

(now chiefly biochemistry) Something that or someone who directs; a director or guide.

That directs.

plural of dirigent

Alternative form of dirigisme

plural of dirigism