初しょ項こうしょこうじ字FuriganaMeanings1nounfirst term; initial termmathematics›Used in mathematics for the first element of a sequence or series. Compare 項 (こう) sense 3.See also: 項 (こう)等とう差さ数すう列れつの初しょ項こうは3です。The first term of the arithmetic sequence is 3.初しょ項こうから第だいn項こうまでの和