PENTREMITES
Pen`tre*mi"tes, n. Etym: [NL., from Gr. remus an oar.] (Zoöl.)
Defn: A genus of crinoids belonging to the Blastoidea. They have five petal-like ambulacra.
PENTROOF Pent"roof`, n. Etym: [F. pente slope + E. roof, or from penthouse roof.]
Defn: See Lean-to.
PENTROUGH
Pen"trough`, n.
Defn: A penstock.
PENTYL
Pen"tyl, n. Etym: [Penta + -yl.] (Chem.)
Defn: The hypothetical radical, C5H11, of pentane and certain of its derivatives. Same as Amyl.
PENTYLIC
Pen*tyl"ic, a.
Defn: Pertaining to, derived from, or containing, pentyl; as, pentylic alcohol