Hipparchus

[ hi-pahr-kuh s ]

/ hɪˈpɑr kəs /

noun

died 514 b.c., tyrant of Athens 527–514.

c190–c125 b.c., Greek astronomer.

Example sentences from the Web for hipparchus

Ptolemy's book, as has been said, is virtually an elaboration of the doctrines of Hipparchus.

A History of Science, Volume 1(of 5) |Henry Smith Williams
But, like Hipparchus, they made faults of calculation in consequence of the defects of their instruments.

A History of Art in Chalda & Assyria, v. 1 |Georges Perrot
After his death, his sons Hipparchus and Hippias succeeded him in the tyranny.

Historic Tales, vol 10 (of 15) |Charles Morris
The Minos, like the Hipparchus, is a dialogue carried on between Sokrates and a companion not named.

Plato and the Other Companions of Sokrates, 3rd ed. Volume II (of 4) |George Grote

Of the two methods of expression Hipparchus ultimately preferred the second.

Kepler |Walter W. Bryant

British Dictionary definitions for hipparchus (1 of 2)

Hipparchus ¹

/ (hɪˈpɑːkəs) /

noun

2nd 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)

Hipparchus ²

/ (hɪˈpɑːkəs) /

noun

a large crater in the SW quadrant of the moon, about 130 kilometres in diameter

Scientific definitions for hipparchus

Hipparchus

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.

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Hipparchus

noun

Example sentences from the Web for hipparchus

British Dictionary definitions for hipparchus (1 of 2)

noun

British Dictionary definitions for hipparchus (2 of 2)

noun

Scientific definitions for hipparchus