from
The Collaborative International Dictionary of English v.0.48
Turbinal \Tur"bi*nal\, a. [L. turbo, turben, -inis, a top,
whirl.] (Anat.)
Rolled in a spiral; scroll-like; turbinate; -- applied to the
thin, plicated, bony or cartilaginous plates which support
the olfactory and mucous membranes of the nasal chambers.
[1913 Webster]
Note: There are usually several of these plates in each nasal
chamber. The upper ones, connected directly with the
ethmoid bone, are called {ethmoturbinals}, and the
lower, connected with the maxillae,
{maxillo-turbinals}. Incurved portions of the wall of
the nasal chamber are sometimes called
{pseudoturbinals}, to distinguish them from the true
turbinals which are free outgrowths into the chambers.
[1913 Webster]