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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:spheno-, sphen-

【来源及含义】Greek: a wedge; the sphenoid bone, a wedge-shaped bone found at the base of the skull

【同源单词】acanthosphenote, alisphenoid, orbitosphenoid, sphenography, sphenoiditis, sphenophallia