photosynthesis中的PHOTO意为light,参见上文;前缀SYN-,用于字母l之前作SYL-,用于b, m, p之前作SYM-,用于r之前作SYR-,用于s之前作SYS-或SY-,表示“共,合,同,与,连,类”(asymmetric, syllable, syllabus, syllogism, symbiosis, symbiotic, symmetrical, symmetry, sympathetic, sympathy, symphonic, symphony,...