SIRENIAN
Si*re"ni*an, n. (Zoöl.)
Defn: Any species of Sirenia.
SIRENICAL
Si*ren"ic*al, a.
Defn: Like, or appropriate to, a siren; fascinating; deceptive.
Here's couple of sirenical rascals shall enchant ye. Marton.
SIRENIZE
Si"ren*ize, v. i.
Defn: To use the enticements of a siren; to act as a siren; to fascinate.
SIRIASIS Si*ri"a*sis, n. Etym: [L., fr. Gr. (Med.) (a) A sunstroke. (b) The act of exposing to a sun bath. [Obs.] Cf. Insolation.
SIRIUS
Sir"i*us, n. Etym: [L., fr. Gr. (Astron.)
Defn: The Dog Star. See Dog Star.
SIRKEER
Sir"keer, n. (Zoöl.)