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ionize
ionizing radiation
ionone
ionophore
ionosphere
ionospheric wave
iontophoresis
IOOF
iota
iotacism
IOU
IOW
Iowa
Iowa City
IP
IPA
IPCC
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iota

i·o·ta [ ī ṓtə ] (plural i·o·tas)


noun 
Definition:
 
1. 9th letter of Greek alphabet: the ninth letter of the Greek alphabet, represented in the English alphabet as "i"

2. small amount: a very small amount of something
anyone with an iota of sense

[Early 17th century. Via Latin< Greek iōta< Semitic]
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