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：myria-, myrio-, myri-

【来源及含义】Greek: ten thousand; very numerous, countless

【相关描述】A combining form meaning "10,000", used especially, in the names of some metric units equal to 10,000 of the unit denoted by the base word; such as, myriagram; myriameter; however, it is not in official use in the International System of Units.

【同源单词】myriacanth, myriacanthous, myriachit, myriad, myriad, myriad-minded