5 Definition

symbol

The cardinal number five.

Wiktionary

(music) Dominant, or the fifth scale degree.

Wiktionary
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noun

That end of any DNA strand that has a terminal phosphate group.

Wiktionary
Synonyms:
pentadphoebelittle-phoebefinquintupletfivesomequintetquintcinquevfive
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adjective

(informal) Relatively close to the 5′ end of a strand of DNA.

Wiktionary
Synonyms:
vfive
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Other Word Forms of 5

Noun

Singular:
5
Plural:
5s