Definition of "unreleased"

unreleased

adjective
not comparable
1. Not released.
2. (linguistics, phonology) Of a stop consonant, remaining occluded when spoken.
  Quotations
  Phonetically, in Malay, initial /t/ and /p/ are never aspirated; only /p, b, t, d, k, g/ occur as final stops and are usually unreleased and unaspirated[.]
  2019, Li Huang, James Lambert, “Another Arrow for the Quiver: A New Methodology for Multilingual Researchers”, in Journal of Multilingual and Multicultural Development, page 10