- the clear yellowish fluid portion of blood or lymph in which the red blood cells, white blood cells, and platelets are suspended
a former name for protoplasm, cytoplasm - a hot ionized material consisting of nuclei and electrons. It is sometimes regarded as a fourth state of matter and is the material present in the sun, most stars, and fusion reactors
- a green slightly translucent variety of chalcedony, used as a gemstone
a less common term for whey
WordReference Random House Learner's Dictionary of American English © 2026
plas•ma /ˈplæzmə/USA pronunciation
n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2026- Anatomy, Physiology, Physiologythe fluid or liquid part of blood, as distinguished from the cells.
plas•ma
(plaz′mə),USA pronunciation n.
plas•mat•ic
(plaz mat′ik),USA pronunciation plas′mic, adj.
WordReference Random House Unabridged Dictionary of American English © 2026- Anatomy, Physiology, Physiologythe liquid part of blood or lymph, as distinguished from the suspended elements.
- Cell Biologycytoplasm.
- Foodwhey.
- Mineralogy, Jewelrya green, faintly translucent chalcedony.
- Physicsa highly ionized gas containing an approximately equal number of positive ions and electrons.
- Greek plásma something molded or formed, akin to plássein to form, mold. See plastic
- Late Latin
- 1705–15;
plasmo-,
- a combining form representing plasma or cytoplasm in compound words:plasmolysis.
- combining form, representing Greek plásma. See plasma, -o-
Collins Concise English Dictionary © HarperCollins Publishers::
plasma /ˈplæzmə/, plasm n