2. (Geom.)
Defn: The part of a spiral generated in one revolution of the straight line about the pole. See Spiral, n. Spire bearer. (Paleon.) Same as Spirifer.
SPIRED
Spired, a.
Defn: Having a spire; being in the form of a spire; as, a spired steeple. Mason.
SPIRICLE
Spi"ri*cle, n. Etym: [Dim., fr. L. spira a coil.] (Bot.)
Defn: One of certain minute coiled threads in the coating of some seeds. When moistened these threads protrude in great numbers. Gray.
SPIRIFER
Spi"ri*fer, n. Etym: [NL., fr. L. spira a coil + ferreto bear.]
(Paleon.)
Defn: Any one of numerous species of fossil brachipods of the genus Spirifer, or Delthyris, and allied genera, in which the long calcareous supports of the arms form a large spiral, or helix, on each side.
SPIRILLUM
Spi*ril"lum, n. Etym: [NL., dim. of L. spira a coil.] (Biol.)
Defn: A genus of common motile microörganisms (Spirobacteria) having the form of spiral-shaped filaments. One species is said to be the cause of relapsing fever.