[ loh-gee ]
/ ˈloʊ gi /
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adjective, lo·gi·er, lo·gi·est.

lacking physical or mental energy or vitality; sluggish; dull; lethargic.



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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of logy

1840–50, Americanism; perhaps <Dutch log heavy, cumbersome + -y1
lo·gi·ly, adverblo·gi·ness, noun

Definition for logy (2 of 2)


a combining form used in the names of sciences or bodies of knowledge: paleontology; theology.
a termination of nouns referring to writing, discourses, collections, etc.: trilogy; martyrology.

Origin of -logy

Middle English -logie<Latin -logia<Greek. See -logue, -y3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for logy (1 of 2)

/ (ˈləʊɡɪ) /

adjective logier or logiest

mainly US dull or listless
loginess, noun
C19: perhaps from Dutch log heavy

British Dictionary definitions for logy (2 of 2)


n combining form

indicating the science or study ofmusicology
indicating writing, discourse, or body of writingstrilogy; phraseology; martyrology
-logical or -logic, adj combining form-logist, n combining form
from Latin -logia, from Greek, from logos word; see logos
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

Medical definitions for logy



Science; theory; study:dermatology.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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