tubus
(tōō′bəs)- A tube or a canal.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for tubus
Historical Examples
Tubus: a term used to designate the corneous base of a ligula: the sheath of the tongue.
Explanation of Terms Used in EntomologyJohn. B. Smith