1.1
- in combination(in units of measurement) nano- (10-9).［用于计量单位］ 同NANO-:
the plates were coated with 500 ng of protein in sodium carbonate buffer.
平皿上涂有含500毫微克蛋白质的碳酸钠缓冲。
1.2
- Grammar neuter.【语法】同NEUTER.
1.3
- (n-)in combination Chemistry normal (denoting straight-chain hydrocarbons).【化学】（指正链碳氢化合物）同NORMAL:
n-hexane.
正己烷。
1.4
- note (used in a book's index to refer to a footnote).［用于书的索引中指脚注］同NOTE:
450n.
见450页脚注。
1.5
- Grammar noun.【语法】同NOUN.