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There are 15 nine-letter words containing IOLOGY

AETIOLOGYaetiology n. The establishment of a cause, origin, or reason for something.
aetiology n. The study of causes or causation.
aetiology n. (Medicine, uncountable) The study or investigation of the causes of disease; a scientific explanation…
AGRIOLOGYagriology n. The comparative study of primitive, illiterate or "savage" cultures.
AGRIOLOGY n. the comparative study of primitive peoples.
ANGIOLOGYangiology n. The branch of anatomy dealing with blood vessels and lymphatics.
ANGIOLOGY n. the branch of medical science concerned with blood vessels and the lymphatic system.
AUDIOLOGYaudiology n. The study of the auditory and vestibular systems, and associated disorders.
audiology n. An allied health profession pertaining to the assessment and rehabilitation of hearing and balance disorders.
AUDIOLOGY n. the study of hearing.
CALIOLOGYcaliology n. The study of birds’ nests.
CALIOLOGY n. the study of bird's nests.
CONIOLOGYconiology n. Alternative form of koniology.
CONIOLOGY n. the study of atmospheric pollutants and dust, also KONIOLOGY.
DOSIOLOGYdosiology n. Alternative form of dosology.
DOSIOLOGY n. the branch of medicine that deals with dosages, also DOSOLOGY, POSOLOGY.
HAGIOLOGYhagiology n. Literature dealing with the lives of saints.
HAGIOLOGY n. the literature dealing with the lives and legends of saints.
HELIOLOGYheliology n. (Dated) heliophysics.
HELIOLOGY n. the science of the sun.
KONIOLOGYkoniology n. The study of dust, pollen and other airborne particles.
KONIOLOGY n. the study of atmospheric pollutants and dust, also CONIOLOGY.
OPHIOLOGYophiology n. (Zoology) The study of snakes, a branch of herpetology.
OPHIOLOGY n. the study of snakes.
RADIOLOGYradiology n. (Medicine) The specialty of medical imaging and its interpretation, originally and especially radiography#Noun…
radiology n. (Medicine, obsolete) The use of radioactive substances in diagnosis and treatment (which today is the…
RADIOLOGY n. the study of X-rays and their medical applications.
SEMIOLOGYsemiology n. Semiotics, the study of signs.
semiology n. (Dated) The science of the signs or symptoms of disease; symptomatology.
semiology n. (Dated) The art of using signs in signalling.
SITIOLOGYsitiology n. Alternative form of sitology.
SITIOLOGY n. the science of diet, also SITOLOGY.
SOCIOLOGYsociology n. A social science that studies society, human social interaction, patterns of social relationships, and…
SOCIOLOGY n. the study of society.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 25 words
  • Scrabble in French: no word
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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