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-ia 1

1. Disease; pathological or abnormal condition: anoxia.
2. Territory; country: Australia.

[New Latin, from Latin -ia and Greek -iā, n. suff.]

-ia 2

Things derived from, relating to, or belonging to: personalia.

[Latin, neuter pl. of -ius, and Greek, neuter pl. of -ios, n. and adj. suffixes.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


suffix forming nouns
1. occurring in place names: Albania; Columbia.
2. (Pathology) occurring in names of diseases and pathological disorders: pneumonia; aphasia.
3. occurring in words denoting condition or quality: utopia.
4. (Botany) occurring in names of botanical genera: acacia; poinsettia.
5. (Zoology) occurring in names of zoological classes: Reptilia.
6. occurring in collective nouns borrowed from Latin: marginalia; memorabilia; regalia.
[(for senses 1–4) New Latin, from Latin and Greek, suffix of feminine nouns; (for senses 5–6) from Latin, neuter plural suffix]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


an ending of nouns borrowed from Greek and Latin, or coined in English or other languages on a Latin model, that denote esp. places (Ethiopia; Georgia; Liberia), states or conditions, esp. physical disorders (inertia; insomnia; leukemia; phobia), or plants (fuchsia; zinnia); also occurring in other nouns, often orig. or still plural (bacteria; genitalia; insignia; media) or collective (academia; militia). The ending -ia has limited productivity as an English suffix, forming names of disorders ( hypoxia) or plural or collective nouns ( militaria; psychedelia; suburbia).
Compare -y 2 .
[< New Latin, Latin, Greek]


or Ia.,



in absentia.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.