protactinium
名词 n.
英 /ˌpɹəʊ.tækˈtɪn.i.əm/
美 /ˌpɹoʊ.tækˈtɪn.i.əm/
英文释义
名词 n.
- A chemical element (symbol Pa) with atomic number 91. A dense, silvery-gray actinide metal.
词源
Etymology tree
Proto-Indo-European *per-der.?
Proto-Indo-European *per-der.?
Proto-Indo-European *pér
Proto-Indo-European *-o
Proto-Indo-European *próder.
Ancient Greek πρό (pró)
Ancient Greek -ᾰτος (-ătos)
Ancient Greek πρῶτος (prôtos)
Ancient Greek πρωτο- (prōto-)lbor.
English proto-
English actinium
English protactinium
From proto- + actinium.
Proto-Indo-European *per-der.?
Proto-Indo-European *per-der.?
Proto-Indo-European *pér
Proto-Indo-European *-o
Proto-Indo-European *próder.
Ancient Greek πρό (pró)
Ancient Greek -ᾰτος (-ătos)
Ancient Greek πρῶτος (prôtos)
Ancient Greek πρωτο- (prōto-)lbor.
English proto-
English actinium
English protactinium
From proto- + actinium.
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数据来源: Wiktionary