hypocenter Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. the point on the earth's surface directly above an earthquake's origin. Example Sentence The hypocenter is the starting point of an earthquake. More Example Sentences Scientists study the hypocenter of earthquakes. Synonyms focus; origin; epicenter Antonyms surface; exterior Hear It! Say It! Write It! hypocenter Switch to cursive Start Share with your friends: