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WordNet-Online 
 
Noun atrium has 2 senses | ||||
| atrioventricular valve atrip atriplex atriplex hortensis atriplex hymenelytra atriplex lentiformis atriplex mexicana atrition atrium atrium cordis atrium dextrum atrium of the heart atrium sinistrum atrocious atrocious  atrociously atrociousness 
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