Simple Definition of logy

from our Learner's Dictionary

logy

1 of 2

adjective

logier; logiest
US, informal : not able to think or move normally because of being tired, sick, etc.
feeling logy [=groggy]

-logy

2 of 2

noun combining form

1
: area of knowledge : theory : science
theology
biology
musicology
psychology
2
: speech or writing
trilogy

Cite this Entry

“Logy.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/logy. Accessed 14 Apr. 2026.

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