PostpetiolePronunciation/post-PET-ee-ohl/CategoryAnatomySingularPostpetiolePluralPostpetiolesDefinitionThe second segment of the petiole in some ants, located between the thorax and gaster. It is part of the waist of the ant.EtymologyExampleThe structure of the postpetiole helps in identifying different ant species.Related TermsPetioleGasterThorax