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WordNet-Online 
 
Adjective mastoidal has 2 senses 
 
Noun mastoidal has 1 sense 
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| mastix mastocyte mastodon mastodont mastoid mastoid additus mastoid bone mastoid process mastoidal mastoidale mastoidectomy mastoiditis mastopathy mastopexy mastotermes mastotermes darwiniensis mastotermes electrodominicus 
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