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

caducous \cadu"cous\, l. caducus falling, inclined to fall,
   fr. cadere to fall. see cadence. bot.  zool.
   dropping off or disappearing early, as the calyx of a poppy,
   or the gills of a tadpole.
   1913 webster
see also:
cadence 

[2] : WordNet (r) 2.0

caducous
     adj : shed at an early stage of development; "most amphibians have
           caducous gills"; "the caducous calyx of a poppy" syn:
           shed ant: persistent
see also:
shed persistent 

Caducous >> C Words
Caducous, definition of term: Caducous
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