| 释义 |
bi-
I. prefix
Etymology: Middle English, from Latin; akin to Old English twi- — more at twi-
1.
a. : two
< bimuscular >
< bicycle >
< biracial >
b. : lasting two : coming or occurring every two
< biennial >
< bimonthly >
< biweekly >
c. : into two parts
< bisect >
2.
a. : twice : doubly : on both sides
< biconic >
< biconvex >
< biserrate >
b. : coming or occurring two times
< bidiurnal >
< biquarterly >
< biweekly >
— often disapproved in this sense because of the likelihood of confusion with sense 1b; compare semi-
3. anatomy : between, involving, or affecting two (specified) symmetrical parts
< bigonial >
< bi-iliac >
4. chemistry
a. : containing one (specified) constituent in double the proportion of the other constituent or in double the ordinary proportion — especially in names of acid salts formed with twice as much acid as is required for a normal salt
< biurate >
b. : di- 2 — especially in names of organic compounds to denote the doubling of a radical or molecule
< bitolyl >
< biphenol >
II. combining form
or bio-
Etymology: Greek, from bios mode of life — more at quick
1. : life
< bioblast >
: living organisms or tissue
< biopsy >
< biodynamics >
2. : biology : biological
< biopsychology >
III. combining form
or bio-
: biographical
< biopic >
: biographical and
< biocritical > |