morphology
absence of physical object
absence of anatomical entity
Absence of anatomical entity should only be used when all of the entity is absent. For example, absent teeth would mean all teeth are absent not some teeth are absent.
http://orcid.org/0000-0001-5208-3432
PATO:0040060
A quality denoting the lack of an anatomical entity or cellular component.
anatomical entity absence
quality