heptad
/hep-tad/US // ˈhɛp tæd //UK // (ˈhɛptæd) //
庚辰,庚子,庚寅年,庚辰年
Related Words
Definitions
n.名词 noun
- 1
- : the number seven.
- : a group of seven.
- : Chemistry. an element, atom, or group having a valence of seven.
Synonyms & Antonyms
Examples
But this oddness belongs to other numbers also (pentad, heptad, &c.).
Heptad, a term in chemistry to denote an atom that is the equivalent of seven atoms of hydrogen, from hepta, seven.
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