| 单词 | anacoustic |
| 释义 | anacoustic in British English (ˌænəˈkuːstɪk) adjective unable to support the propagation of sound; soundless anacoustic in American English (ˌænəˈkuːstɪk) adjective of or pertaining to the upper portion of the earth's atmosphere and to interplanetary space, where sound cannot be transmitted because molecules are too far apart to serve as a transmitting medium Word origin [an-1 + acoustic]an- is a prefix occurring before stems beginning with a vowel or h in loanwords from Greek, where it means “not,” “without,” “lacking” (anarchy; anecdote); used in the formation of compound words. Other words that use the affix an- include: analphabetic, anomalous, anonymous, anopheles, anoxia |
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