(aviation) Initialism of auxiliary power unit.

(astronomy) A constellation of the southern sky, said to resemble a bird of paradise.

plural of APU

A mallku; a supreme leader of the Aymara people.

plural of apu mallku

Used in scholarly works to cite a reference at second hand

plural of APUD cell

(usually attributive, endocrinology, of cells) That secrete low molecular weight polypeptide hormones, such as gastrin, secretin, cholecystokinin, and motilin.

(mineralogy) A tetragonal-ditetragonal dipyramidal black mineral containing antimony, iron, oxygen, and sulfur.

Any of a group of endocrine cells that share the function of secreting a low-molecular-weight polypeptide hormone.