plasma

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈplæzmə/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/ˈplæzmə/ ,USA pronunciation: respelling(plazmə)


WordReference Random House Learner's Dictionary of American English © 2026
plas•ma /ˈplæzmə/USA pronunciation   n. [uncountable]
  1. Anatomy, Physiology, Physiologythe fluid or liquid part of blood, as distinguished from the cells.

WordReference Random House Unabridged Dictionary of American English © 2026
plas•ma  (plazmə),USA pronunciation n. 
  1. Anatomy, Physiology, Physiologythe liquid part of blood or lymph, as distinguished from the suspended elements.
  2. Cell Biologycytoplasm.
  3. Foodwhey.
  4. Mineralogy, Jewelrya green, faintly translucent chalcedony.
  5. Physicsa highly ionized gas containing an approximately equal number of positive ions and electrons.
Also, plasm  (plazəm)USA pronunciation for defs. 1–3.
  • Greek plásma something molded or formed, akin to plássein to form, mold. See plastic
  • Late Latin
  • 1705–15;
plas•mat•ic  (plaz matik),USA pronunciation plasmic, adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
plasma /ˈplæzmə/, plasm n
  1. the clear yellowish fluid portion of blood or lymph in which the red blood cells, white blood cells, and platelets are suspended
  2. a former name for protoplasm, cytoplasm
  3. 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
  4. a green slightly translucent variety of chalcedony, used as a gemstone
  5. a less common term for whey
Etymology: 18th Century: from Late Latin: something moulded, from Greek, from plassein to mouldplasmatic /plæzˈmætɪk/, ˈplasmic adj
WordReference Random House Unabridged Dictionary of American English © 2026
plasmo-, 
  1. a combining form representing plasma or cytoplasm in compound words:plasmolysis.
Also,[esp. before a vowel,] plasm-. 
  • combining form, representing Greek plásma. See plasma, -o-

'plasma' also found in these entries (note: many are not synonyms or translations):

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