Webster
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Webster’s Revised Unabridged Dictionary · 1913

Duct

Duct (dŭkt), n. [L. ductus a leading, conducting, conduit, fr. ducere, ductum, to lead. See Duke, and cf. Douche.] 1. Any tube or canal by which a fluid or other substance is conducted or conveyed.

2. (Anat.) One of the vessels of an animal body by which the products of glandular secretion are conveyed to their destination.

3. (Bot.) A large, elongated cell, either round or prismatic, usually found associated with woody fiber.

☞ Ducts are classified, according to the character of the surface of their walls, or their structure, as annular, spiral, scalariform, etc.

4. Guidance; direction. [Obs.] Hammond.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty.