Defn: A sac which surrounds the generative bodies in the gonophore of a hydroid.

PERIGONIUM
Per`i*go"ni*um, n.; pl. Perigonia. Etym: [NL.]

Defn: Same as Perigone.

PERIGORD PIE
Per"i*gord pie`. Etym: [From Périgord, a former province of France.]

Defn: A pie made of truffles, much esteemed by epicures.

PERIGRAPH
Per"i*graph, n. Etym: [Gr.

Defn: A careless or inaccurate delineation of anything. Etym: [R.]

PERIGYNIUM
Per`i*gyn"i*um, n.; pl. Perigynia. Etym: [NL. See Perigynous.] (Bot.)

Defn: Some unusual appendage about the pistil, as the bottle-shaped body in the sedges, and the bristles or scales in some other genera of the Sedge family, or Cyperaceæ.

PERIGYNOUS
Pe*rig"y*nous, a. Etym: [Pref. peri- + Gr. (Bot.)