a suffix occurring in loanwords from Latin, which often denote a location or receptacle (armarium; caldarium; solarium; vivarium). It has limited productivity in English, especially in words denoting an artificial environment for plants or animals, on the model of vivarium or herbarium: aquarium; insectarium; terrarium.
Dear diary . . . What’s the word for the qualities that make your writing unique?
Science magazine recently released a study on the effects of diary writing for college and high school students. The results showed that students experiencing test anxiety and who wrote about their disquiet in a diary right before the exam performed better on the test by half a grade. Dictionaries and diaries are old friends; what better way to learn new words than expressing your thoughts …
Origin of -arium
< Latin -ārium; see -ary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
suffix forming nouns
indicating a place for or associated with somethingaquarium; planetarium; solarium
Word Origin for -arium
from Latin -ārium, neuter of -ārius -ary
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012