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单词 trappoid
释义 trappoid, a. Min.|ˈtræpɔɪd|
[f. trap n.5 + -oid.]
Resembling or allied to trap-rock.
1842in Phillips Man. Geol. (1855) 250 Upon this lies an often trappoid or magnesian conglomerate.1854Murchison Siluria xiii. 334 A reaggregated trappoid breccia.1889Nature 12 Dec. 140/2 In saucer-like hollows in the solid, tough, trappoid rocks.
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