| 释义 |
bi-
bi-(word root) twoExamples of words with the root bi-: bicyclebi- 1 or bin-pref.1. a. Two: biform.b. Both: binaural.c. Both sides, parts, or directions: biconcave.2. a. Occurring at intervals of two: bicentennial.b. Usage Problem Occurring twice during: biweekly.3. a. Containing twice the proportion of a specified chemical element or group necessary for stability: bicarbonate.b. Containing two chemical atoms, radicals, or groups: biphenyl.
[Latin bis, bi-, twice, and bīnī, two by two; see dwo- in Indo-European roots.]Usage Note: The prefix bi-, when modifying an adverb of time, means that the time interval should be doubled. Thus a bimonthly meeting takes place once every two months, and a biweekly meeting once every two weeks. The prefix semi-, in the same context, means that the interval of time should be halved. Thus, a semimonthly meeting is held twice a month (that is, every half month), and a semiweekly meeting twice a week. Words with the prefix bi- and semi- are often confused, so expressions such as every two months or twice a month are often preferable in order to avoid misinterpretation.
bi- 2pref. Variant of bio-.bi- or sometimes before a vowel bin-combining form1. two; having two: bifocal. 2. occurring every two; lasting for two: biennial. 3. on both sides, surfaces, directions, etc: bilateral. 4. occurring twice during: biweekly. 5. a. denoting an organic compound containing two identical cyclic hydrocarbon systems: biphenyl. b. (rare in technical usage) indicating an acid salt of a dibasic acid: sodium bicarbonate. c. (not in technical usage) equivalent of di-12a[from Latin, from bis twice]
bi- combining form a variant of bio- bi (baɪ)
adj., n., pl. bis, bi's. Slang. bisexual. [1955–60; by shortening] Bi
Chem. Symbol. bismuth. bi-1
, a combining form meaning “twice,” “two” bicarbonate. [< Latin; compare twi-] usage: Most words referring to periods of time and prefixed by bi- are potentially ambiguous. Since bi- can be taken to mean either “twice each” or “every two,” a word like biweekly can be understood as “twice each week” or “every two weeks.” Confusion is often avoided by using the prefix semi- meaning “twice each” (semiweekly; semimonthly; semiannual) or by using the appropriate phrases: twice a week; twice each month; every two months; every two years. bi-2, var. of bio-, esp. before a vowel: biopsy. bi- A prefix meaning "two." It is often used to form adjectives meaning "having two of" or "having double" something, such as in bilateral, having two sides.TranslationsEncyclopediaSeebibi-
bi- word element [L.], two.
bi(o)- word element [Gr.], life; living.bi-1. Prefix meaning twice or double, referring to double structures or dual actions. 2. chemistry used to denote a partially neutralized acid (an acid salt); for example, bisulfate. Compare: bis-, di-. [L.] bi- 1. Prefix meaning twice or double, referring to double structures, dual actions, for example. 2. chemistry Used to denote a partially neutralized acid (an acid salt); e.g., bisulfate.
Compare: bis-, di-[L.]bi- prefix denoting two.
bi- ) prefix denoting life or living organisms.FinancialSeeBIBI-
| Acronym | Definition |
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| BI-➣Twice, Double (Prefix) |
ThesaurusSeeBi |