单词	orthocenter
释义	orthocenter noun or·​tho·​cen·​ter ˈȯr-thə-ˌsen-tər  : the common intersection of the three altitudes of a triangle or their extensions or of the several altitudes of a polyhedron provided these latter exist and meet in a point Word History Etymology International Scientific Vocabulary First Known Use 1866, in the meaning defined above
随便看	homodromy homodynamic homodyne homoe- homoean homoecious homoeo- homoeobox homoeomeral homoeomeria homoeomeriae homoeomerian homoeomerianism homoeomeric homoeomerical homoeomerous homoeomery homoeomorph homoeomorphs homoeopath homoeopathic homoeopathies homoeopathist homoeopathists homoeopaths

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