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单词 lacuna
释义
la·cu·na (lə-kynə, -k-)
n. pl. la·cu·nae (-nē) or la·cu·nas
1. An empty space or a missing part; a gap: "self-centered in opinion, with curious lacunae of astounding ignorance" (Frank Norris).
2. Anatomy A cavity, space, or depression, especially in a bone, containing cartilage or bone cells.

[Latin lacūna; see LAGOON.]

la·cunal adj.
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