Share this entry
enzyme Syllabification: en·zyme
Pronunciation: /ˈenzīm/

Definition of enzyme in English:


A substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.

Most enzymes are proteins with large complex molecules whose action depends on their particular molecular shape. Some enzymes control reactions within cells and some, such as the enzymes involved in digestion, outside them

Example sentences
  • They can act as real enzymes and, by analogy to protein enzymes, are called ribozymes.
  • It appears to be due, in large part, to the activity of a specific enzyme, cytokinin oxidase.
  • This is probably due to the presence of other enzymes besides the protease.


Pronunciation: /ˌenzəˈmatik/
Example sentences
  • The enzymatic removal of carbohydrate has been successful with soluble proteins.
  • This effect was independent of the enzymatic activity of this protein.
  • The enzymatic degradation of a phospholipid membrane has been followed in situ.
Pronunciation: /ˌenzəˈmatik(ə)lē/
Example sentences
  • They are defined as carbohydrate-binding proteins which are distinct from immunoglobulins, do not enzymatically alter the structure of their ligands, and do not act as sensor/transport proteins for free mono- or disaccharides.
  • An alternative approach is to enzymatically remove interfering carbohydrate from naturally abundant eukaryotic membrane proteins.
  • During blood clotting, two peptide fragments are removed enzymatically from fibrinogen in the formation of fibrin, the blood-clotting protein.
Pronunciation: /enˈzīmik/ /-ˈzimik/
Example sentences
  • The phototoxic activity of this porphyrin is mainly mediated by the impairment of the enzymic and transport functions of both the outer and cytoplasmic membranes.
  • For enzymic catalysis, this source of reversible work is unlikely because the amount of work required is much greater, while the participants in the reaction, including the enzyme, are usually chemically unreactive.
  • On the one hand, they may simply be by-products of several enzymic reactions.
Pronunciation: /enˈzīmik(ə)lē/ /-zim-/


Late 19th century: coined in German from modern Greek enzumos 'leavened', from en- 'within' + Greek zumē 'leaven'.

Words that rhyme with enzyme

Definition of enzyme in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources