/ Dictionary / Index N nosology: Meaning and Definition of Find definitions for: no•sol•o•gy Pronunciation: (nō-sol'u-jē), [key] — n. the systematic classification of diseases. the knowledge of a disease. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nosology (Thesaurus) nosography nosophobia Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language