Countable Nouns Ending in OND and Containing OS

Browse 7 valid English countable nouns ending in OND and containing OS, from Nanosecond, Microsecond, Picosecond, Femtosecond, Attosecond, Yoctosecond and Zeptosecond to rarer terms. Check definitions and spelling below, or visit our noun grammar guide to review singular and plural count rules.

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Starts with A
1 words
attosecond
Starts with F
1 words
femtosecond
Starts with M
1 words
microsecond
Starts with N
1 words
nanosecond
Starts with P
1 words
picosecond
Starts with Y
1 words
yoctosecond
Starts with Z
1 words
zeptosecond

•Browse Countable Nouns by Letter (A to Z)

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