[ sem-ee-pohs-tl, sem-ahy- ]
/ ˌsɛm iˈpoʊs tl, ˌsɛm aɪ- /
a postage stamp sold by a government at a premium above its face value, the excess being used for a nonpostal purpose, as a charity.
noting or pertaining to such a stamp.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for semipostal
/ (ˌsɛmɪˈpəʊstəl) /
philately, mainly US denoting stamps where all or part of the receipts from sale are given to some charitable cause
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012