词根词缀：fissi-, fiss-, fissur-

【来源及含义】Latin: split, cleave, cut into, cleft; vent; break into parts, separate

【同源单词】binary fission, cervical fissure, contrafissure, fissile, fission, fissiparity

词根词缀：thyro-, thyr-, thyre-, thyreo-, thyroid-, thyroido-, -thyrea, -thyreosis, -thyroidism, -thyroid

【来源及含义】Greek: pertaining to the thyroid gland

【同源单词】athyrea, hyperthyrea, hypothyrea, thyreoitis, thyrofissure, thyroglossal