part_of part of part of characteristic of inheres in thickness leaf leaf thickness Refers to thickness PATO:0000915 A 1-D extent quality which is equal to the dimension through an object as opposed to its length or width. If you are annotating to this term, please add an additional annotation to vascular leaf morphology (TO:0000419) or non-vascular leaf morphology trait (TO:0000925), depending on the species. TO:0000258 A leaf morphology trait (TO:0000748) which is the thickness of a leaf (PO:0025034). plant_trait_ontology PATO:0000915 leaf size