tropical year   (TTS Sound)

The tropical_year has 1 Senses.

• astronomical year, tropical year, solar year, equinoctial year
• 太陽年
• the time for the earth to make one revolution around the sun, measured between two vernal equinoxes
• 春分と春分の間隔で計られる地球が太陽の周りを1回公転する時間