ultrametric

== English == === Etymology === From ultra- +‎ metric. === Adjective === ultrametric (not comparable) (mathematics) Describing a metric whose triangle inequality has the stronger form d ( x , z ) ≤ max { d ( x , y ) , d ( y , z ) } {\displaystyle d(x,z)\leq \max\{d(x,y),d(y,z)\}} . Describing a phylogeny in which every tip is the same distance from the root. ==== Hypernyms ==== metric ==== Related terms ==== ultrametrics ==== Translations ==== === Noun === ultrametric (plural ultrametrics) A metric whose triangle inequality has the stronger form d ( x , z ) ≤ max { d ( x , y ) , d ( y , z ) } {\displaystyle d(x,z)\leq \max\{d(x,y),d(y,z)\}} . ==== Hyponyms ==== p-adic ultrametric