a suffix found on nouns borrowed from Latin, esp. 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
also occurs in scientific coinages on a Latin model, as in names of metallic elements (barium; titanium
) and as a Latinization of Gk -ion
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.