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AONB
AOPEC
AOR
aorist
aorta
aortic arch
aortic arch syndrome
aortic valve
aortography
AOSIS
Aotearoa
aoudad
AP
ap- (1)
ap- (2)
APA
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aperiodic
a·pe·ri·od·ic [ ày peeree óddik ]


adjective 
Definition:
 
1. irregular: happening at irregular intervals
aperiodic floods
2. not exhibiting resonance: describes a mechanical or electrical system that does not exhibit resonance when a periodic disturbance is applied

a·pe·ri·od·i·cal·ly adverb
a·pe·ri·o·dic·i·ty [ ày peeree ə díssətee ] noun
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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