apud

preposition1

1. •
   Used in scholarly works to cite a reference at second hand

   • Jones apud Smith means that the original source is Jones, but that the author is relying on Smith for that reference.

noun[before a noun]1

1. •
   That secrete low molecular weight polypeptide hormones, such as gastrin, secretin, cholecystokinin, and motilin.

   • More recently it has been proposed that the APUD cell types of the gastrointestinal and respiratory tracts originate from neuroendocrine-programmed ectoblast. — 1981