National Cancer Institute Thesaurus

Last uploaded: July 2, 2026
Id http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C12498
http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C12498
Preferred Name

External Acoustic Meatus
Definitions
A part of the ear canal that is external to the ear drum.
Synonyms
EXTERNAL ACOUSTIC MEATUS
external auditory canal
auditory canal
external acoustic meatus
External Acoustic Meatus
external acoustic tube
Auditory Canal
External Auditory Canal
External Auditory Meatus
external auditory tube
EAR CANAL
Ear Canal
ear canal
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Type http://www.w3.org/2002/07/owl#Class

All Properties

label
External Acoustic Meatus
prefixIRI
Thesaurus:C12498
code
C12498
DEFINITION
A part of the ear canal that is external to the ear drum.
ALT_DEFINITION
A tube running from the outer ear to the middle ear. The human ear canal extends from the pinna to the eardrum and is about 26 mm in length and 7 mm in diameter.
A tubular structure that runs from the outer ear to the tympanic membrane.
Is_Value_For_GDC_Property
Legacy Concept Name
External_Acoustic_Meatus
Contributing_Source
CDISC
GDC
UBERON
xRef
UBERON:0001352
FULL_SYN
EXTERNAL ACOUSTIC MEATUS
external auditory canal
auditory canal
external acoustic meatus
External Acoustic Meatus
external acoustic tube
Auditory Canal
External Auditory Canal
External Auditory Meatus
external auditory tube
EAR CANAL
Ear Canal
ear canal
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UMLS_CUI
C0013444
Maps_To
Auricular canal, NOS
External auditory canal
External auricular canal
Auditory Canal
Auditory canal, NOS
External auditory meatus
Ear Canal
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Preferred_Name
External Acoustic Meatus
type
subClassOf
Display_Name
External Auditory Canal
Concept_In_Subset
Semantic_Type
Body Part, Organ, or Organ Component
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