PTK may refer to: Pairwise Transient Key, a key in the IEEE 802.11i WPA2 specification Phi Theta Kappa, an international honor society Phototherapeutic keratectomy, laser eye surgery Pilotiruemyi Transportny Korabl Novogo Pokoleniya (PTK NP, lit. "New Generation Piloted Transport Ship"), a Roscosmos program to develop a reusable spacecraft Portal Three Kingdoms, a Magic: The Gathering card set Post and Telecom of Kosovo Protein Tyrosine Kinase, an enzyme PTK Toolkit, a C++ toolkit for creating MacOS and Windows cross-platform games Oakland County International Airport, a county-owned public-use airport located in Waterford, Michigan with IATA Code PTK P, T and K, the most common voiceless plosive consonants across all languages
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).