Defn: The passage between the iter and optocoele in the brain. B. G.
Wilder.

PYLAGORE
Pyl"a*gore, n. Etym: [Gr. pylagore.] (Gr. Antiq.)

Defn: a deputy of a State at the Amphictyonic council.

PYLANGIUM
Py*lan"gi*um, n.; pl. Pylangia (. Etym: [NL., from Gr. (Anat.)

Defn: The first and undivided part of the aortic trunk in the
amphibian heart.
— Py*lan"gi*al, a.

PYLON Py"lon, n. Etym: [NL., fr. Gr. (a) A low tower, having a truncated pyramidal form, and flanking an ancient Egyptian gateway. Massive pylons adorned with obelisks in front. J. W. Draper.

(b) An Egyptian gateway to a large building (with or without flanking towers).

PYLORIC
Py*lor"ic, a. Etym: [Cf. F. pylorique.] (Anat.)

Defn: Of, pertaining to, or in the region of, the pylorus; as, the pyloric end of the stomach.

PYLORUS Py*lo"rus, n.; pl. Pylori. Etym: [L., fr. Gr. (Anat.) (a) The opening from the stomach into the intestine. (b) A posterior division of the stomach in some invertebrates.