1Satisfaction or contentment — a feeling of being pleased or fulfilled, with nothing left to complain about.
テストの点数に満足している。
I'm satisfied with my test score.
彼は今の仕事の内容に満足していないようだ。
He doesn't seem satisfied with what his current job involves.
お客様の満足が、私たちの第一の目標です。
Customer satisfaction is our top priority.
満足そうな笑顔で、彼女は料理を食べ終えた。
She finished eating with a satisfied smile.
2Sufficient or satisfactory; adequate or proper — meeting a requirement or condition. Often used as 満足な〜, meaning 'adequate.'
説明は十分で、参加者は満足していた。
The explanation was sufficient, and the participants were satisfied.
この道は満足な照明がなく、夜は暗くて危ない。
This road doesn't have adequate lighting, so it's dark and dangerous at night.
その条件は、こちらの要求を満足している。
That condition satisfies our requirements.
3A technical usage in mathematics: to satisfy an equation or condition.
この解は、方程式の条件を満足する。
This solution satisfies the conditions of the equation.