fd

Initialism of fire department. [(firefighting, US) An organization, often part of a local government, whose purpose is preventing and putting out fires. May provide other emergency services as well, such as first aid and search and rescue.]

(computing) Initialism of floppy disk. [(computer hardware) A removable disk used for storing digital data, measuring between 2 and 8 inches diagonally and storing between 80 KB and 240 MB.]

(computing) Initialism of floppy drive. [A computer hardware device used for reading and writing on removable floppy disks, such as 3+¹⁄₂″, 5+¹⁄₄″ or 8″ diskettes.]

(aviation) Initialism of flight director. [(aviation) A system of a narrow horizontal and vertical bar overlaid on an aircraft's attitude indicator, with the bars deflecting to provide guidance as to the pitch and roll inputs required to maintain the desired flightpath.]

(education) Initialism of foundation degree. [(education, UK) A vocational qualification in higher education, intended to give comprehensive knowledge in a subject to enable the holder to go on to employment or further study in that field.]

(Internet, text messaging) Abbreviation of friend. [A person, typically someone other than a family member, spouse or lover, whose company one enjoys and towards whom one feels affection.]