| 单词 | perboric acid |
| 释义 | perboric acid in American English (pərˈbɔrɪk) the hypothetical acid, HBO3, whose salts, the perborates, are formed by the action of hydrogen peroxide on borates Word origin per- + boricperboric acid in American English (pərˈbɔrɪk, -ˈbour-) noun Chemistry a hypothetical acid, HBO3, known only in the form of its salts Word origin [1880–85; per- + boric acid]This word is first recorded in the period 1880–85. Other words that entered Englishat around the same time include: barnstorm, impressionism, jackpot, quotation mark, regionalismper- is a prefix meaning “through,” “thoroughly,” “utterly,” “very”. Other words thatuse the affix per- include: perfect, pervade, pervert |
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