SPHYGMOMETER
Sphyg*mom"e*ter, n. Etym: [Gr. -meter.] (Physiol.)
Defn: An instrument for measuring the strength of the pulse beat; a sphygmograph.
SPHYGMOPHONE
Sphyg"mo*phone, n. Etym: [Gr. (Physiol.)
Defn: An electrical instrument for determining by the ear the rhythm of the pulse of a person at a distance.
SPHYGMOSCOPE
Sphyg"mo*scope, n. Etym: [Gr. -scope.] (Physiol.)
Defn: Same as Sphygmograph.
SPHYRAENOID Sphy*ræ"noid, a.Etym: [L. sphyraena a kind of sea fish (Gr. sfy`raina) + -oid.] (Zoöl.)
Defn: Of or pertaining to the Sphyrænidæ, a family of marine fishes including the barracudas.
SPIAL
Spi"al, n.
Defn: A spy; a scout. [Obs.] Bacon.