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：-ian

【来源及含义】Latin: suffix form of -an from -ianus, a modifier of the main word to which it is attached: belonging to, coming from, being involved in, or being like something

【相关描述】Appearing in such words as comedian, egalitarian, Bostonian, Italian, Smithsonian, mathematician, Alabamian, Californian, Arizonian, and Canadian. It is attached to the root of common or proper nouns with the meanings "of, pertaining to, from", or "like" the proper name appearing in the stem.

【同源单词】abecedarian, academician, acanthopterygian, acararian, acoustician, aeolian

词根词缀：pterygo-, pteryg-

【来源及含义】Greek: wing

【同源单词】acanthopterygian, actinopterygian, Actinopterygii, apterygial, Apterygota, archipterygium