the line at which the earth's surface and the sky appear to meet

the limits of one's knowledge, experience, or interest

किसी के ज्ञान, अनुभव या रुचि की सीमाएँ

English Usage: Traveling abroad opened new horizons for her.

Hindi Usage: विदेश यात्रा ने उसके लिए नए क्षितिज खोले.