Each dust particle in the atmosphere can scatter sunlight, contributing to the vivid colors of a sunset.
大气中的每个尘埃微粒都能散射阳光，从而促成日落时绚丽的色彩。
Which choice best defines “particle”?
A — Very small piece. “particle” means very small piece.
Which word means “very small piece”?
B — particle. “particle” means very small piece.
particle — very small piece. In Chinese: 微粒，颗粒.
particle is pronounced /ˈpɑːrtɪkl/.
Each dust particle in the atmosphere can scatter sunlight, contributing to the vivid colors of a sunset. (大气中的每个尘埃微粒都能散射阳光，从而促成日落时绚丽的色彩。)
fragment, molecule, speck — all close in meaning to particle (very small piece).
Yes. particle is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
part(part) + icle(small)