| Noun | 1. | plasma - the colorless watery fluid of the blood and lymph that contains no cells, but in which the blood cells (erythrocytes, leukocytes, and thrombocytes) are suspendedECF, extracellular fluid - liquid containing proteins and electrolytes including the liquid in blood plasma and interstitial fluid; "the body normally has about 15 quarts of extracellular fluid" plasma protein - any of the proteins in blood plasma gamma globulin, human gamma globulin - a plasma protein containing the immunoglobulins that are responsible for immune responses |
| 2. | plasma - a green slightly translucent variety of chalcedony used as a gemstone calcedony, chalcedony - a milky or greyish translucent to transparent quartz | |
| 3. | plasma - (physical chemistry) a fourth state of matter distinct from solid or liquid or gas and present in stars and fusion reactors; a gas becomes a plasma when it is heated until the atoms lose all their electrons, leaving a highly electrified collection of nuclei and free electrons; "particles in space exist in the form of a plasma" physical chemistry - the branch of chemistry dealing with the physical properties of chemical substances interplanetary gas - a rarefied flow of gas and charged particles (plasma) that stream from the sun and form the solar wind state of matter, state - (chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container); "the solid state of water is called ice" |