单词 | perlite |
释义 | perlite —perlitic /perr lit"ik/, adj. /perr"luyt/, n. Petrog. a volcanic glass in which concentric fractures impart a distinctive structure resembling masses of small spheroids, used as a plant growth medium. Also, pearlite. [1825-35; < F; see PEARL1, -ITE1] |
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