[plaz-muh] /ˈplæz mə/
Anatomy, Physiology. the liquid part of blood or lymph, as distinguished from the suspended elements.
Cell Biology. .
a green, faintly translucent chalcedony.
Physics. a highly ionized gas containing an approximately equal number of positive ions and electrons.
the clear yellowish fluid portion of blood or lymph in which the red blood cells, white blood cells, and platelets are suspended
short for blood plasma
a former name for protoplasm, cytoplasm
a green slightly translucent variety of chalcedony, used as a gemstone
a less common term for whey
1712, “form, shape” (earlier plasm), from Late Latin plasma, from Greek plasma “something molded or created,” hence “image, figure; counterfeit, forgery; formed style, affectation,” from plassein “to mold,” originally “to spread thin,” from PIE *plath-yein, from root *pele- (2) “flat, to spread” (see plane (n.1)). Sense of “liquid part of blood” is from 1845; that of “ionized gas” is 1928.
plasma plas·ma (plāz’mə) or plasm (plāz’əm)
plas·mat’ic (plāz-māt’ĭk) or plas’mic (-mĭk) adj.
A state of matter in which some or all of the electrons have been torn from their parent atoms. The negatively charged electrons and positively charged ions move independently.
Note: Plasmas are usually associated with very high temperatures — most of the sun is a plasma, for example.
The liquid part of blood or lymph. Blood plasma is mainly water; it also contains gases, nutrients, and hormones. The red blood cells, white blood cells, and platelets are all suspended in the plasma of the blood.
[plaz-mid] /ˈplæz mɪd/ noun, Microbiology. 1. a segment of DNA independent of the chromosomes and capable of replication, occurring in bacteria and yeast: used in recombinant DNA procedures to transfer genetic material from one cell to another. /ˈplæzmɪd/ noun 1. a small circle of bacterial DNA that is independent of the main bacterial chromosome. Plasmids […]
[plaz-min] /ˈplæz mɪn/ noun, Biochemistry. 1. . /ˈplæzmɪn/ noun 1. a proteolytic enzyme that causes fibrinolysis in blood clots plasmin plas·min (plāz’mĭn) n. An enzyme that hydrolyzes peptides and esters of arginine and histidine and converts fibrin to soluble products. Also called fibrinase, fibrinolysin.
[plaz-min-uh-juh n, -jen] /plæzˈmɪn ə dʒən, -ˌdʒɛn/ noun, Biochemistry. 1. the blood substance that when activated forms . /plæzˈmɪnədʒən/ noun 1. (biochem) a zymogen found in blood that gives rise to plasmin on activation plasminogen plas·min·o·gen (plāz-mĭn’ə-jən) n. The inactive precursor to plasmin that is found in body fluids and blood plasma. Also called profibrinolysin.
- Plasminogen activator
plasminogen activator n. See urokinase.