Definify.com
Webster 1913 Edition
Duct
Duct
(dŭkt)
, Noun.
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 1828 Edition
Duct
DUCT
,Noun.
1.
Any tube or canal by which fluid or other substance is conducted or conveyed. It is particularly used to denote the vessels of an animal body, by which the blood, chyle, lymph, &c., are carried from one part to another, and the vessels of plants in which the sap is conveyed.2.
Guidance; direction. [Little used.]