|
pentad n. 五个一组;五年间;五价元素 五个一组;五年间;五价元素 pentad n 1: the cardinal number that is the sum of four and one [ synonym: { five}, { 5}, { V}, { cinque}, { quint}, { quintet}, { fivesome}, { quintuplet}, { pentad}, { fin}, { Phoebe}, { Little Phoebe}] Pentad \ Pen" tad\, n. [ Gr. penta` s penta` dos, a body of five, fr. pe` nte five.] ( Chem.) Any element, atom, or radical, having a valence of five, or which can be combined with, substituted for, or compared with, five atoms of hydrogen or other monad; as, nitrogen is a pentad in the ammonium compounds. [ 1913 Webster] 2. Any grouping of five things. [ PJC]
Pentad \ Pen" tad\, a. ( Chem.) Having the valence of a pentad. [ 1913 Webster] Pentadactyl
|
安装中文字典英文字典查询工具!
中文字典英文字典工具:
英文字典中文字典相关资料:
- HAPPY Synonyms Antonyms - 164 words | Thesaurus. com
Find 164 different ways to say HAPPY, along with antonyms, related words, and example sentences at Thesaurus com
- HAPPIEST Synonyms Antonyms - 102 words | Thesaurus. com
Find 102 different ways to say HAPPIEST, along with antonyms, related words, and example sentences at Thesaurus com
- WISTFUL Synonyms Antonyms - 35 words | Thesaurus. com
Find 35 different ways to say WISTFUL, along with antonyms, related words, and example sentences at Thesaurus com
- GOOD ENOUGH Synonyms Antonyms - 181 words | Thesaurus. com
Find 181 different ways to say GOOD ENOUGH, along with antonyms, related words, and example sentences at Thesaurus com
|
|