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：irido-, irid-, iri-, iris-

【来源及含义】Greek: iris [relating to the eye]; the rainbow; colored circle, colored portion of the eye [originally, "something bent or curved"]

【相关词根词缀】 Related references to "eye" or "eye part" word families: blepharo-; core-; corneo-; eye, eyes; lenti-, lens-; lenticulo-; ocelli-; oculo-; op-, -optic; ophthalmo-; phaco-; pupillo-; retino-; uveo-.

【同源单词】iridaceous, iridadenosis, iridalgia, iridauxesis, iridectasis, iridectome

词根词缀：-ium

【来源及含义】Greek: a suffix; scientific names; names of metallic elements; a part, lining, or enveloping tissue, region; little; representing a diminutive force

【相关描述】A suffix found on nouns borrowed from Latin; especially, derivatives of verbs (odium; tedium; colloquium; delirium); deverbal compounds with the initial element denoting the object of the verb (nasturtium); other types of compounds (equilibrium; millennium); and derivatives of personal nouns, often denoting the associated status or office (collegium; consortium; magisterium).

This ending of -ium also occurs in scientific terms on a Latin model; such as, in names of metallic elements (barium; titanium) and as a Latinization of Greek -ion (pericardium).

【同源单词】acute delirium, agrobacterium, aigialium, alluvium, andrium, anthium