of or containing platinum, esp in the divalent state
platinous in American English
(ˈplætənəs)
adjective
of, like, or containing platinum, esp. divalent platinum
platinous in American English
(ˈplætnəs)
adjective
Chemistry
containing bivalent platinum
Word origin
[1835–45; platin(um) + -ous]This word is first recorded in the period 1835–45. Other words that entered Englishat around the same time include: catch-up, cutaway, daisy chain, hot plate, squeegee-ous is a suffix forming adjectives that have the general sense “possessing, full of”a given quality (covetous; glorious; nervous; wondrous); -ous and its variant -ious have often been used to Anglicize Latin adjectives with terminations that cannotbe directly adapted into English (atrocious; contiguous; garrulous; obvious; stupendous). As an adjective-forming suffix of neutral value, it regularly Anglicizes Greekand Latin adjectives derived without suffix from nouns and verbs; many such formationsare productive combining forms in English, sometimes with a corresponding nominalcombining form that has no suffix (as -fer and -ferous; -phore and -phorous; -pter and -pterous; -vore and -vorous)