The Collaborative International Dictionary of English v.0.48:

Cannular \Can"nu*lar\, a.
   Having the form of a tube; tubular. [Written also canular.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Canula \Can"u*la\, n., Canular \Can"u*lar\, a., Canulated
\Can"u*la`ted\, a.
   See Cannula, Cannular, and Cannulated.
   [1913 Webster]