词根词缀：arachno-, arachn-

【来源及含义】Greek: spider; the arachnoidea; when used in medicine this Greek element refers to a membrane, veins, or any web-like structure in the body

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "spider; arachnoidea": acaro-; arano-; mite, mites.

【同源单词】arachnactis, Arachne, arachnean, arachnephobia, arachnid, Arachnida

词根词缀：-idium, -idion

【来源及含义】Greek: smaller or lesser; little

【同源单词】acarinarium, androgametangium, antheridium, arachnidium, ascidium, aspidium

词根词缀：-um

【来源及含义】Greek > Latin: a suffix that forms singular nouns

【相关描述】Here are just a few of the hundreds of words that end with -um.

【同源单词】abandum, abortorium, absorption spectrum, acropodium, actinium, acute delirium