Definitions from Wiktionary (PTB)

▸ noun:  (linguistics) Proto-Tibeto-Burman
▸ noun:  (plural only) Initialism of powers that be. [(idiomatic) The holders of power or the authorities in a given situation, especially if seen as being faceless or unreasonably bureaucratic.]
▸ noun:  (medicine) Initialism of preterm birth.
▸ noun:  (pathology) Initialism of pulmonary tuberculosis. [(pathology) The most common form of active tuberculosis (TB) infecting the lungs, generally caused by Mycobacterium tuberculosis.]
▸ noun:  (biochemistry) Initialism of polypyrimidine tract-binding protein.
▸ noun:  (software) Initialism of public test build, public test branch.
▸ noun:  (networking) Initialism of packet too big, an IPv6 error message.



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