词根词缀：acantho-, acanth-, -acanth, -acanths, -acanthid, -acanthous

【来源及含义】Greek: used either as a prefix or as a suffix; pointed appendages; spine, spiny; thorn, thorny

【同源单词】acanth, acantha, acanthaceous, acanthamebiasis, acanthamoeba, acanthesthesia

词根词缀：heter-, hetero-

【来源及含义】Greek: different, other, another, unlike; irregular, abnormal

【相关描述】This Greek element forms many scientific and other terms, often in opposition to homo-. Sometimes it is also the antonym of auto-, homoeo-, iso-, ortho-, and syn-.

【相关词根词缀】 Inter-related cross references, directly or indirectly, involving word units meaning "another, other, different, alternating, varied, changing": ali-; allo-; alter-; allelo-; mut-; poikilo-; reciproc-; vari-.

【同源单词】heteracanth, heteracanthous, heteracmy, heteradelphus, heteradenic, heteralius