from Wiktionary, Creative Commons Attribution/Share-Alike License.
- verb Present participle of
Sorry, no etymologies found.
Both of those are examples of the use of a possesive apostrophe though, you're not pluralising either.
Although I do also tend to say "hippopotami": I hold that the pluralising rule -us - -i for words marked +classical is perfectly good English morphology, and I quite like the sound of other persons' teeth grinding.
The rector of Findon in 1276, Galfridus de Aspall, seems to have brought the art of pluralising to a finer point than most.
Homer would find no difficulty in pluralising the mighty Hunter and the hare into huntsmen and hares when utilising a description originally referring to the constellation.
Monitor note: Other value/basic/essential ranges are available. letters passim): It was actually considered correct before the 1800s to use an apostrophe before the pluralising "s" if the word was of foreign origin.