| adenoid |
(usually plural) a mass of tissue that grows behind the nose in the upper part of the throat. When swollen, the adenoids can make breathing difficult. |
| appendix |
a short, closed tube of tissue that grows out of the large intestine. The appendix is on the right side of the lower abdomen. [1/2 definitions] |
| body |
all the physical material that makes up a person or animal, including limbs, organs, tissue, and other parts. [1/5 definitions] |
| bone |
the hard tissue that forms the skeleton of a person or animal. [1/2 definitions] |
| callus |
a thickened, toughened area of skin or other tissue, such as bone or bark. |
| cartilage |
a tough, white tissue that forms part of the skeleton of humans and other animals. Cartilage is not as stiff as bone. Cartilage is found in the ear, nose, and joints. |
| cellulose |
the main element of plant tissue, used in making paper, cellophane, and fabrics. |
| cyst |
a small pouch within body tissue that is filled with fluid or air. Some cysts are connected with serious disease, but most are not harmful at all. |
| donor |
one who contributes blood, tissue, or an organ for medical purposes. [1/2 definitions] |
| fat |
animal or plant tissue that contains such a substance. [1/4 definitions] |
| flesh |
the soft tissue, including muscle and fat, that lies between the skin and the bones. [1/3 definitions] |
| growth |
an area of tissue that is not normal. [1/3 definitions] |
| inflammation |
a small area of tissue that is hot, red, swollen, and sore because of infection or injury. |
| irritation |
inflammation or soreness of a tissue, or the act of causing this condition. [1/3 definitions] |
| ligament |
a band of tough tissue that connects bones or supports muscles or organs. |
| lining1 |
a layer of tissue or other material covering the inside of something. |
| marrow |
the soft tissue that fills the hollow centers of most bones. One type of marrow makes new blood cells. |
| membrane |
a thin layer of tissue found in living things. Some kinds of membranes cover the outside or inside of organs. Other membranes separate or connect different parts of the body. |
| muscle |
tissue in the body of animals and humans that moves parts of the body. Muscle is made up of bundles of fibers that move the body by tightening and relaxing. [2/3 definitions] |
| scan |
the use of a machine that scans something. Medical scanners make pictures of living tissue. Computer scanners copy pictures or writing from a book into a computer. [1/5 definitions] |
| skin |
the thin tissue covering the body of a person or animal. [1/5 definitions] |