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Materials for locks in a canal, or the works forming a lock or locks.

A natural passage or canal; as, the external auditory meatus. See Illust. of Ear.

last of the vertebrate blastoderm, the edges of which unite, making a tube (the medullary canal) from which the brain and spinal cord are developed. -- Medullary rays (Bot.), the rays of cellular tissue seen in a transverse section of exogenous wood, which pass from the pith to the bark. -- Medullary sheath (Anat.),…

ination of movement. It is supposed to depend upon a morbid condition of the semicircular canals of the internal ear. Named after Ménière, a French physician.

All that part of the alimentary canal which is developed from the primitive enteron and is lined with hypoblast. It is distinguished from the stomod, a part at the anterior end of the canal, including the cavity of the mouth, and the proctod, a part at the posterior end, which are formed by invagination and are lined w…

The middle part of the alimentary canal from the stomach, or entrance of the bile duct, to, or including, the large intestine.

millstones. -- Mill pond, a pond that supplies the water for a mill. -- Mill race, the canal in which water is conveyed to a mill wheel, or the current of water which drives the wheel. -- Mill tail, the water which flows from a mill wheel after turning it, or the channel in which the water flows. -- Mill tooth, a…

l the cavities which open externally, such as those of the mouth, nose, lungs, intestinal canal, urinary passages, etc.

The central canal of the spinal cord.

Connected with both the nose and the palate; as, the nasopalatine or incisor, canal connecting the mouth and the nasal chamber in some animals; the nasopalatine nerve.

Originally, a laborer on canals for internal navigation; hence, a laborer on other public works, as in building railroads, embankments, etc. [Eng.]

Of or pertaining to both the neuron and the enteron; as, the neurenteric canal, which, in embroys of many vertebrates, connects the medullary tube and the primitive intestine. See Illust. of Ectoderm.

The central canal and ventricles of the spinal cord and brain; the myelencephalic cavity.

An opening at either end of the embryonic neural canal.

on bridge (Engin.), a bridge connecting the parts of an estate separated by a railroad, a canal, or an ordinary road.

n which is included within the outlet of the pelvis, and is traversed by the urinogenital canal and the rectum.

The part of the alimentary canal between the cavity of the mouth and the esophagus. It has one or two external openings through the nose in the higher vertebrates, and lateral branchial openings in fishes and some amphibias.

of (an animal, as a frog), as by passing a stout wire or needle up and down the vertebral canal.

besides having the cavity for the pulp, is either perforated or grooved by a longitudinal canal, at the lower end of which the duct of the poison gland terminates. See Illust. under Fang. -- Poison gland (Biol.), a gland, in animals or plants, which secretes an acrid or venomous matter, that is conveyed along an organ…

A level stretch in a canal between locks.