om·i·cron /ˈɑməˌkrɑn, ˈo, ||oˈmaɪ(ˌ)krɑn/ 希臘字母第15字
O·mi·cron n. [Written also omikron.] Lit., the little, or short, O, o; the fifteenth letter of the Greek alphabet. ◄ ►
omicron n : the 15th letter of the Greek alphabet