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ammonite (2)
ammonium
ammonium bicarbonate
ammonium carbonate
ammonium chloride
ammonium hydroxide
ammonium nitrate
ammonium sulfate
ammonoid
ammunition
amnesia
amnesty
Amnesty International
amnia
amnio
amniocentesis
amniography
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ammonoid
am·mo·noid [ ámmə nòyd ] (plural am·mo·noids)


noun 
Definition:
 
extinct marine mollusk: an extinct cephalopod mollusk with a partitioned shell
[Mid-19th century. < modern Latin Ammonoidea< ammonites (see ammonite1)]
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