pth

(biochemistry) Initialism of parathyroid hormone. [(biochemistry) A polypeptide hormone that is released by the chief cells of the parathyroid glands and is involved in raising the levels of calcium ions in the blood.]

(chiefly Hong Kong) Initialism of Putonghua. [Standard Mandarin, the official language of the People's Republic of China; the state-designated national speech of the Han nationality using Beijing pronunciation as the standard pronunciation, Beijing speech as the basic dialect, and the model writing of the modern vernacular prose as the norm for grammar.]

(electronics) Initialism of plated through-hole.