(astronomy) Abbreviation of high proper motion star.

Initialism of hydroxypropyl methylcellulose.

Initialism of high pressure, high temperature: a process for creating synthetic diamonds

(clinical psychology) Initialism of hallucinogen persisting perception disorder.

(computing) Initialism of high-performance computing. / (organic chemistry) Initialism of hydroxypropyl cellulose. / (electricity, automotive) Initialism of high power charging.

Initialism of high pressure processing. / Initialism of hypophosphatasia.

(biology) Initialism of human pluripotent stem cell.

(pathology) Abbreviation of human parainfluenza virus.

(medicine) Initialism of health protection team.

Initialism of Hungarian People’s Republic.