has part has part has_part characteristic of abnormal frontal bone morphology abnormal frontal bone nasal part morphology 2017-11-10T11:58:18Z any structural anomaly of the smallest part of the frontal bone which is connected to the frontal processes of the maxilla and the nasal bones, forming the stem (root) of the nose MPheno.ontology abnormal pars nasalis ossis frontalis morphology MP:0030378 tetrapod frontal bone