单词 | hipparchus |
释义 | Hipparchus[ hi-pahr-kuhs ] / hɪˈpɑr kəs / noundied 514 b.c., tyrant of Athens 527–514. c190–c125 b.c., Greek astronomer. Words nearby Hipparchuship-huggers, hip joint, hiplength, hipp-, hipparch, Hipparchus, Hipparchus satellite, hippeastrum, hipped, hipped roof, Hippel's disease Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for HipparchusBritish Dictionary definitions for Hipparchus (1 of 2)Hipparchus1 / (hɪˈpɑːkəs) / noun2nd century bc, Greek astronomer. He discovered the precession of the equinoxes, calculated the length of the solar year, and developed trigonometry died 514 bc, tyrant of Athens (527–514) British Dictionary definitions for Hipparchus (2 of 2)Hipparchus2 / (hɪˈpɑːkəs) / nouna large crater in the SW quadrant of the moon, about 130 kilometres in diameter Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for HipparchusHipparchus also Hipparchos (hĭ-pär′kəs) 190?-120? bce Greek astronomer who mapped the positions of about 850 stars in the earliest known star chart (129 bce). His observations of the heavens formed the basis of Ptolemy's Earth-centered model of the universe. He was also a pioneer of trigonometry. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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