-ology /ɒlədʒi $ ɑːl-/ (also -logy) suffix [in nouns]
[Origin: -logy]

1. the study of something, especially something scientific:
geology (=the study of rocks and the Earth)
climatology (=the study of climate)
Egyptology (=the study of ancient Egypt)

2. the things studied by a particular science:
The geology (=structure of the rocks etc) of north Devon is particularly interesting.
► -ological /əlɒdʒɪkəl $ -lɑː-/ suffix [in adjectives]
► -ologically /əlɒdʒɪkli $ əlɑː-/ suffix [in adverbs]:
geologically interesting

[TahlilGaran] Dictionary of Contemporary English ▲