太陽同期軌道 たいようどうききどう Meanings Noun sun-synchronous orbit; heliosynchronous orbit; SSO Kanji 太 thick. Read as タイ. 陽 sunshine. Read as ヨウ. 同 same. Read as ドウ. 期 period 軌 track 道 road. Read as ドウ. Jinuma: Japanese Dictionary · Word lists