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A natural cavity or hollow in a bone
Answer for the clue "A natural cavity or hollow in a bone ", 6 letters:
antrum
Alternative clues for the word antrum
Word definitions for antrum in dictionaries
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Antrum \An"trum\, n.; pl. Antra . [L., fr. Gr. ?.] A cavern or cavity, esp. an anatomical cavity or sinus. --Huxley. [1913 Webster] ||
WordNet
Word definitions in WordNet
n. a natural cavity or hollow in a bone [also: antra (pl)]
Wiktionary
Word definitions in Wiktionary
n. (context biology English) A bodily cavity, especially one having bony walls, especially one in the sinuses.
Wikipedia
Word definitions in Wikipedia
In biology , antrum is a general term for a cavity or chamber, which may have specific meaning in reference to certain organs or sites in the body. In vertebrates , it may refer specifically to: Antrum cardiacum , a dilation that occurs in the esophagus ...
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
"a cave or cavity," late 14c., medical Latin, from Greek antron "cave."
Usage examples of antrum.
Von Langenbeck of Berlin mentions an instance of fracture of the superior maxilla, in which the eyeball was so much displaced as to lodge in the antrum of Highmore.
His desk, unlike the others in the antrum, thrown together and wobbly, was an elaborate sectional apparatus with automatic drawers, a pop-up typewriter, modular shelving and a built-in pencil sharpener that operated on batteries.
Where the floor of the antrum curved severely upward he put the heel of his shoe to a large flat stone and kicked it right through the natural hatch in the earth where it had been wedged.
And, to finish the story, and still helping her I started for Chicago to try and locate a doctor who would put the surgically correct antrum opening in it and the antrum tube in it.
The only time the antrum is ever entered in any other way is if the man is minus teeth and has to retain that first molar to chew on.
The doctor grumpily surveyed the gold antrum plug, then dipped its head in the solution again, and repeated his operation of shaking off the drops and letting the film of acid work.
The explanation of these exhibitions is as follows: The instrument enters the mouth and pharynx, then the esophagus, traverses the cardiac end of the stomach, and enters the latter as far as the antrum of the pylorus, the small culdesac of the stomach.
It has its roots there in the antrum and it has grown upwards, under the cheekbone, into the eye socket, and downwards into the gullet.
But the stolid tree--a bloodwood, all bone, toughened by death, a few ruby crystals in sparse antra all that remained significant of past life--afforded but meagre hospitality to the, soft lead.
Adonai Eloim, Adonai Jehova, Adonai Sabaoth, Metraton On Agla Mathon, verbum pythonicum, mysterium salamandrae, conventus sylvorum, antra gnomorum, daemonia Coeli God, Almonsin, Gibor, Jehosua, Evam, Zariatnatmik, veni, veni, veni.
The explanation of these exhibitions is as follows: The instrument enters the mouth and pharynx, then the esophagus, traverses the cardiac end of the stomach, and enters the latter as far as the antrum of the pylorus, the small culdesac of the stomach.