apex
Cross references: 1. summit apex \'a--.peks\ \'a--p*-.se-z, 'ap-*-\ n or apex.es or api.ces [L] pl 1a: the uppermost point : VERTEX 1b: the narrowed or pointed end : TIP 2: the highest or culminating point
Cross references: 1. summit apex \'a--.peks\ \'a--p*-.se-z, 'ap-*-\ n or apex.es or api.ces [L] pl 1a: the uppermost point : VERTEX 1b: the narrowed or pointed end : TIP 2: the highest or culminating point