The Collaborative International Dictionary
Scalariform
Scalariform \Sca*lar"i*form\, a. [L. scalare, scalaria, staircase, ladder + -form: cf. F. scalariforme.]
Resembling a ladder in form or appearance; having transverse bars or markings like the rounds of a ladder; as, the scalariform cells and scalariform pits in some plants.
(Zo["o]l.) Like or pertaining to a scalaria.
Wiktionary
scalariform
a. Having the form of a ladder