To do this, they may recommend having a medical procedure, such as a bone marrow aspiration or a bone marrow biopsy, to collect a sample of bone marrow. The results of a bone marrow aspiration and/or biopsy help doctors diagnose the following conditions: 1  An infection with an unknown cause. 2  Blood disorders.3  Chromosomal or genetic diseases. 4  Cancer of the blood cells, such as leukemia.he procedures can also be used to monitor the side effects of chemotherapy and determine whether the treatment is working. About the procedure. A bone marrow aspiration is a procedure that removes a sample of the liquid portion of bone marrow.
Princeton's WordNet(0.00 / 0 votes)Rate this definition: 1  two-dimensionality, flatness, planeness(noun) the property of having two dimensions. 2  flatness(noun) a want of animation or brilliance. 3  flatness(noun) a deficiency in flavor.
Flat is usually a noun or an adjective, but it is sometimes an adverb. 1. 'flat' used as a noun. In British English, a flat is a set of rooms for living in, usually on one floor of a large building. ...a ground floor flat. See flat-apartment. 2. 'flat' used as an adjective or adverb. Something that is flat is not sloping, curved, or pointed. Every flat surface in our house is covered with junk. Use a saucepan with a flat base. If something lies or rests flat against a surface, all of it is touching the surface. He was lying flat on his back. She let the blade of her oar rest flat upon the water.