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

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

-i·um

-ium

 
part of speech: suffix
definition 1: chemical element or group.
chromium
definition 2: positive ion.
ammonium hydroxide