Definition of "PTT"
PTT
noun
countable and uncountable, plural PTTs
(oil industry) Initialism of Partitioning tracer test.
(hematology) Initialism of partial thromboplastin time.
(chemistry) Initialism of polytrimethylene terephthalate.
(telecommunications) Initialism of push-to-talk.
(telecommunications) Initialism of push-to-transmit.
(telecommunications) Initialism of press-to-talk.
(telecommunications) Initialism of press-to-transmit.