2. Suffix. (chemistry) Forms the ends of the names of certain elements (such as molybdenum and platinum). ¹
3. Suffix. Denotes transitive verbs in the trade pidgins used between English-speakers and indigenous populations; used derogatorily by extension in English by addition to any verb, transitive or not. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of -um
-tron -troph -trophic -trophy -tropic -tu- -tude -tum- -tuple -tuples | -ty -type -u- -ual -ule -um (current term) -un- -ure -uret -uretic | -urgy -uria -valent -ve -verse -vi- -ville -vir- -vore -vorous |