| 释义 |
oxa-
oxa- or before a vowel ox-combining form (Chemistry) indicating that a chemical compound contains oxygen, used esp to denote that a heterocyclic compound is derived from a specified compound by replacement of a carbon atom with an oxygen atom: oxazine.
oxa-
oxa-Combining form inserted in names of organic compounds to signify the presence or addition of oxygen atom(s) in a chain or ring (as in ethers), not appended to either (as in ketones and aldehydes).
See also: hydroxy-, oxo-, oxy-. [English. oxygen] oxa- Combining form inserted in names of organic compounds to signify the presence or addition of oxygen atom(s) in a chain or ring (as in ethers), not appended to either (as in ketones and aldehydes).
See also: hydroxy-, oxo-, oxy-[English. oxygen]oxa-, ox-Prefixes indicating thepresence of oxygen in place of carbon. |