lumen
Viscus means organ. So hollow viscus means an organ than has a lumen or open space within it, like the stomach and intestines. Perforated hollow viscus is an organ with a lumen that has a hole in it such that contents can escape from inside the organ to outside the organ. If a gastric ulcer perforated, it would be a perforated hollow viscus, allowing gastric acid and contents out into the abdominal cavity.
marrow
The word hollow is an adjective. It means to have an empty space inside.
a cavity,opening,or space within somethingwhen something is hollow t has nothing inside it (when a tree is hollow it is empty)
ventricles
a cavity,opening,or space within somethingwhen something is hollow t has nothing inside it (when a tree is hollow it is empty)
a cavity,opening,or space within somethingwhen something is hollow t has nothing inside it (when a tree is hollow it is empty)
Because there is a hollow space inside the prism, the light would be refracted twice, turning it back to white light.
Capacity is the space inside something (that is hollow). Volume is the space something occupies. The capacity of a bottle is the amount of space inside the bottle, whereas the volume of the bottle is the space that the bottle occupies. The difference between the two is the volume of the material from which the bottle is made.
Hollow can be an adjective, a noun and a verb. Adjective: Having an empty space inside. Noun: A small valley between mountains. Verb: To make a hole in something.
The sinuses.
The hollow space behind the nose is called the hot dog sinus