ISPE Glossary of Pharmaceutical and Biotechnology Terminology

Print this page         
Find Definition by Term and/or Language
Term Language (Optional)
Browse All Terms
Beginning With By Language
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z :: All English


A unicellular organism having a less complex structure than a eukaryote. It is characterized by the absence of a nucleus and by having the genetic material in the form of simple filaments of DNA. The sizes of most prokaryotes vary from 0.5µm to 3µm in equivalent radius. Different species have different shapes such as spherical or Coccus (for example, Staphylococci), cylindrical or bacillus (E. coli), or spiral or spirillum (Rhodospirillum).

See also: Eukaryote

Do you have a term that should be included in the glossary?
Submit a term for review


  • Click to go to My Communities of Practice
  • Click to go to My Affiliate or Chapter
  • Click to go to My Profile
Click to go to the Member Gift