Initialism of acute promyelocytic leukemia.

(astronomy, NASA, physics) Abbreviation of Applied Physics Laboratory (a Johns Hopkins University laboratory) / (physics, US) Abbreviation of Applied Physics Laboratory (at the University of Washington)

(Scouting) Initialism of assistant patrol leader.

(medicine) Initialism of Advanced Pediatric Life Support. / (medicine) Initialism of Antiphospholipid Syndrome.

plural of APL

Self-confidence; poise; composure. / (ballet) The apparent elegance and precision exhibited by a confident, accomplished dancer. / The perpendicular; perpendicularity.

(pathology) Relating to aplasia. / (pathology) Relating to the inability of the body to create new cells, such that tissue cannot grow or regenerate.

(pathology) A condition marked by the incomplete development, or entire absence, of an organ or tissue.

(mineralogy) A brown or green variety of andradite containing manganese.

(postpositive) In a generous or overlarge quantity.