Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
   
Display options
Show syllables
Show Lookup History
Double-Click Lookup
Show Word Parts
  Show Spanish support
 
Pronunciation
Wordsmyth
  Phonics
  IPA
 
Entry formats
Standard
  Classic
 
Lookup History
protein

pro·tein

protein

 
 
pronunciation:
pro tin
features:
Word Explorer, Word Parts
part of speech: noun
definition: a substance that is made up of nitrogen, carbon, oxygen, hydrogen, and possibly other elements. Proteins are found in all living things and are a necessary part of life processes.
Eggs, meat, and beans are good sources of protein.
 
derivation: proteinaceous (adj.)
Word Explorer
See
  blood, cell, food, milk, muscle, virus
Word PartsSubscriber feature About this feature