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词汇 bi-
释义

Definition of bi- in English:

bi-

combining formbʌɪ
  • 1Two; having two.

    表示“二”,“具有两个”

    bicoloured
    See also bin-
    biathlon
    1. 1.1 Occurring twice in every one or once in every two.
      表示“每…两次”,“每两…一次”
      bicentennial
    2. 1.2 Lasting for two.
      表示“持续两…的”
      biennial
    3. 1.3 Doubly; in two ways.
      表示“两倍”,“两方面地”
      biconcave
    4. 1.4Chemistry (in names of compounds) containing two atoms or groups of a specified kind.
      〔化〕 用于化合物名称表示“联(二)”
      biphenyl
    5. 1.5Chemistry Denoting an acid salt.
      bicarbonate
    6. 1.6Zoology Botany (of division and subdivision) twice over.
      〔植,动〕表示“(部或亚门)二回”
      bipinnate

Usage

The meaning of bimonthly (and other similar words such as biweekly and biyearly) is ambiguous. Such words can either mean ‘occurring or produced twice a month’ or ‘occurring or produced every two months’. The only way to avoid this ambiguity is to use alternative expressions like every two months and twice a month. Biannual and biennial are also confusing: biannual means ‘occurring twice a year’ and biennial means ‘occurring every two years’

Origin

From Latin, 'doubly, having two'; related to Greek di- 'two'.

Definition of bi- in US English:

bi-

(also bin-)
combining formbaɪ
  • 1Two; having two.

    表示“二”,“具有两个”

    biathlon
    bicolored
    binocular
    1. 1.1 Occurring twice in every one.
      表示“每…两次”,“每两…一次”
      biannual
      bimonthly
    2. 1.2 Occurring once in every two.
      表示“每…两次”,“每两…一次”
      bicentennial
      biennial
    3. 1.3 Lasting for two.
      表示“持续两…的”
      biennial
      biennium
    4. 1.4 Doubly; in two ways.
      表示“两倍”,“两方面地”
      biconcave
    5. 1.5Chemistry A substance having a double proportion of the radical, group, etc., indicated by the simple word.
      bicarbonate
      binoxalate
    6. 1.6Botany Zoology (of division and subdivision) twice over.
      〔植,动〕表示“(部或亚门)二回”
      bipinnate

Usage

The meaning of bimonthly (and other similar words such as biweekly and biyearly) is ambiguous. Bimonthly, for instance, can mean either ‘occurring or produced twice a month’ or ‘occurring or produced every two months.’ So, if an organization holds bimonthly meetings, over the course of a year, will it meet six times or twenty-four times? The only way to avoid this ambiguity is to use alternative expressions like every two months and twice a month. See also biennial

Origin

From Latin, ‘doubly, having two’; related to Greek di- ‘two’.

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