(economics, countable) Initialism of net domestic product. / (chemistry, physics, uncountable) Initialism of neutron depth profiling. / (biochemistry) Initialism of Norrie disease protein.

(politics) Initialism of National Democratic Party. / (Canadian politics, historical) Initialism of Newfoundland Democratic Party. / (Canada) Initialism of New Democratic Party.

plural of NDP

(Canadian politics, informal) A member or supporter of the Canadian New Democratic Party.

plural of NDPer

Initialism of no deforestation, no peat, no exploitation: an ethical approach to the supply of certain natural resources

plural of NDPB

Initialism of non-departmental public body.