[1] : The Collaborative International Dictionary of English v.0.48

selachii \sela"chii\, n. pl. nl., fr. gr. ??? a fish having
   cartilages instead of bones. zool.
   an order of elasmobranchs including the sharks and rays; the
   plagiostomi. called also selacha, selache, and
   selachoidei.
   1913 webster
see also:
selacha selache selachoidei 

[2] : WordNet (r) 2.0

selachii
     n : sharks; rays; dogfishes; skates syn: elasmobranchii, subclass
         elasmobranchii, subclass selachii
see also:
elasmobranchii subclass elasmobranchii subclass selachii 

Selachii >> S Words
Selachii, definition of term: Selachii
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