(Greek > Latin: a suffix that forms singular nouns)
Here are just a few of the hundreds of words that end with -um.
There were several abortoria in the rural area of the province.
Actinium possesses no stable isotopes and exists in nature only as a disintegration product of uranium and thorium.
The longest lived isotope of actinium is Ac 227 with a half-life of 21.6 years. Its atomic number is 89, the melting point is 1,050°C, the estimated boiling point is 3,200°C, and its specific calculated gravity is 10.07, and a valence of 3.
2. A suddenly appearing and severe delirium lasting for only a short time.
Used to indicate a specific year date.
2. A blank book in which to insert autographs, memorial verses, original drawings, or other souvenirs.
3. A book at public places in which visitors enter their names.
According to Samuel Johnson in his A Dictionary of the English Language, an album is a book in which foreigners have long been accustomed to inserting the autographs of celebrated people.