Defn: An order of elasmobranchs including the sharks and rays; the
Plagiostomi. Called also Selacha, Selache, and Selachoidei.
SELACHOIDEI
Sel`a*choi"de*i, n. pl. Etym: [NL. See Selachii, and -oid.] (Zoöl.)
Defn: Same as Selachii.
SELACHOSTOMI
Sel`a*chos"to*mi, n. pl. Etym: [NL. See Selachii, and Stoma.] (Zoöl.)
Defn: A division of ganoid fishes which includes the paddlefish, in which the mouth is armed with small teeth.
SELAGINELLA Sel`a*gi*nel"la, n. Etym: [NL., fr. L. selago, -inis, a kind of plant.] (Bot.)
Defn: A genus of cryptogamous plants resembling Lycopodia, but producing two kinds of spores; also, any plant of this genus. Many species are cultivated in conservatories.
SELAH
Se"lah, n. Etym: [Heb. selah.] (Script.)
Defn: A word of doubtful meaning, occuring frequently in the Psalms; by some, supposed to signify silence or a pause in the musical performance of the song. Beyond the fact that Selach is a musical term, we know absolutely nothing about it. Dr. W. Smith (Bib. Dict.)
SELCOUTH
Sel"couth, n. Etym: [AS. selc, seldc; seld rare + c known. See
Uncouth.]