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jmdict 1208330 Active (id: 2296349)
活性 [news1,nf04]
かっせい [news1,nf04]
1. [n] {chemistry}
▶ activity
Cross references:
  ⇐ ant: 2860743 非活性【ひかっせい】 1. inactive; inert
2. [adj-f] {chemistry}
▶ active



History:
5. A 2024-03-28 08:16:47  Jim Breen <...address hidden...>
4. A* 2024-03-28 00:55:28  Robin Scott <...address hidden...>
  Refs:
活性	6,452,821		
活性を	141,105		
活性が	106,603
  Comments:
Noun use is not uncommon. GG5 and luminous have "activity". 
Doesn't appear to be adj-no judging from the top 活性の n-gram terms.
  Diff:
@@ -15 +14,0 @@
-<pos>&adj-no;</pos>
@@ -16,0 +16,5 @@
+<field>&chem;</field>
+<gloss>activity</gloss>
+</sense>
+<sense>
+<pos>&adj-f;</pos>
3. A 2019-10-04 22:04:32  Jim Breen <...address hidden...>
  Refs:
活性化	3915724	  
活性酸素	576451	  
活性剤	368117
2. A* 2019-10-04 17:13:14  Rene Malenfant <...address hidden...>
  Refs:
gg5, eij
  Comments:
primarily used in compounds, e.g.  活性土 = active soil but it is also adj-no (and gg5 says adj-na)

i think it makes the most sense to gloss it as an adjective
  Diff:
@@ -14,0 +15 @@
+<pos>&adj-no;</pos>
@@ -16,3 +17,2 @@
-<gloss>being active</gloss>
-<gloss>activeness</gloss>
-<gloss>activity</gloss>
+<field>&chem;</field>
+<gloss>active</gloss>
1. A* 2019-10-03 14:17:38  Travis Dawson <...address hidden...>
  Comments:
The English word "activity" typically refers to AN activity, which is not what 活性 means. The sense of "activity" which is useful here is the antonym of "passivity", and I think adding two additional glosses will help prevent misunderstanding.
  Diff:
@@ -15,0 +16,2 @@
+<gloss>being active</gloss>
+<gloss>activeness</gloss>

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