Definition of Hipparchus in English:

Hipparchus

Line breaks: Hip|par¦chus
Pronunciation: /hɪˈpɑːkəs
 
/
( Circa 170-after 126 bc), Greek astronomer and geographer. He is best known for his discovery of the precession of the equinoxes and is credited with the invention of trigonometry.

Definition of Hipparchus in:

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Word of the day demoralize
Pronunciation: dɪˈmɒrəlʌɪz
verb
cause (someone) to lose confidence or hope