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
mastoid

mas·toid

mastoid

 
pronunciation:
mae stoId
parts of speech:
adjective, noun
part of speech: adjective
definition 1: of or pertaining to the lower portion of the bone behind the ear in humans and other vertebrates.
definition 2: having the appearance or shape of a breast or nipple.
 
part of speech: noun
definition: the section of the skull bone that points downward behind each ear in humans and other vertebrates.