47 CFR § 76.800 - Definitions.
(a) MDU. A multiple dwelling unit building (e.g., an apartment building, condominium building or cooperative).
(b) MDU owner. The entity that owns or controls the common areas of a multiple dwelling unit building.
(c) MVPD. A multichannel video programming distributor, as that term is defined in Section 602(13) of the Communications Act, 47 U.S.C. 522(13).